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For what value of p, the points (2,1),(p,-7) and (-1,3)are collinear

Posted by Brajmohan Yadav 1 year, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Naitik Nama 1 year, 9 months ago

(2,1), (p,−1) & (−1,3) are collinear ⇒p−2−1−1=−1−p3−(−1) ⇒p−2−2=−1−p4 ⇒2(1+p)=4(p−2)⇒2+2p=4p−8 ⇒10−2p ∴ p=5

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Prove that the √5 is irrational

Posted by Chiluka Sriteja 1 year, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Priyanshu Singh 1 year, 10 months ago

assume that √5 is rational number √5=a/b (here 'a' and 'b' are co prime) b√5= a Square on both sides (b√5)^2 =(a)^2 5b^2 = a^2.............(i) If a^2 is divisible by 5 than it means that 5 is also divisible by a. Now, let there be another integer 'c' therefore, a=5c square on both side a^2 =25c^2 5b^2 =25c^2 {from equation (i)} then, b^2 =5 c^2 b^2/5 = c^2 If b^2 is divisible by 5 than it means b is also divisible by 5 . Therefore 'a' and 'b' has common factor 5 . But , we ensure that 'a' and 'b' are co prime. Therefore, our assumption is wrong that √5 is rational number. Contradiction occurs. Therefore √5 is irrational numbers.

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Gunpreet Kaur 1 year, 10 months ago

lets assume that √5 is rational number √5=a/b (here 'a' and 'b' are co prime) b√5= a Square on both sides (b√5)^2 =(a)^2 5b^2 = a^2.............(i) If a^2 is divisible by 5 than it means that 5 is also divisible by a. Now, let there be another integer 'c' therefore, a=5c square on both side a^2 =25c^2 5b^2 =25c^2 {from equation (i)} then, b^2 =5 c^2 b^2/5 = c^2 If b^2 is divisible by 5 than it means b is also divisible by 5 . Therefore 'a' and 'b' has common factor 5 . But , we ensure that 'a' and 'b' are co prime. Therefore, our assumption is wrong that √5 is rational number. Contradiction occurs. Therefore √5 is irrational numbers.

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Gunpreet Kaur 1 year, 10 months ago

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CosA divided by 1+ sinA = secA-tanA

Posted by Shawn Jo 1 year, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Dhwani Panchal 1 year, 9 months ago

SecA+tanA = 1- sinA

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Sriya Sharma 1 year, 9 months ago

Cos A/ 1+ sinA Now put cos A as (1- sinA) And put 1+ sinA as ( cos A ) Then it will be (1/ cosA - sinA /cos A) Since 1/cos A is (secA ) And SinA / cosA is( tan A ) Therefore (secA - Tan A ) hence proved ...

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The nth term of an ap from the end 2,7,12,17,22.......227 is

Posted by Meet Jadhwani 1 year, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Gunpreet Kaur 1 year, 10 months ago

AP- 2,7,12,17,22.......227 an=227 a=2 d= 5 , n=? an= a+ (n-1) d 227= 2+ (n-1)(5) 227-2= (n-1)(5) 225/5 = (n-1) 45 +1 =n 46 = n

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Ayushi Angra 1 year, 10 months ago

Reverse the series...so that a=227..and then solve using formula an=a+(n-1)d

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What was the volume of 20 balls of radius 3.5 mm

Posted by Mohammad Aftab 1 year, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Raghav Jindal 1 year, 10 months ago

Volume=4πr³/3 4×22/7×35/10×35/10×35/30 179.67mm³

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LCM and HCF of 15,20

Posted by Agaru Bhargavi 1 year, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Abirami N 1 year, 9 months ago

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Meet Jadhwani 1 year, 10 months ago

HCF OF 15=3×5 HCF of 20=2×2×5 HCF OF 15,20=5 LCM OF 15,20=60

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Pritam Panghal 1 year, 10 months ago

15= 3 × 5 20 = 2×2×5 5 is common in both then, HCF = 5 LCM is product of HCF and other numbers LCM = 5×2×2×3 LCM = 60

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Shubham Pathak 1 year, 10 months ago

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Hlo Ex 6.2 ques 10

Posted by Arsh Kaur 1 year, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Priyanshu Singh 1 year, 10 months ago

Ncert ya rs Aggarwal

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In the circumference of a circle increase from 4π to 8π , then it's area is

Posted by Tarun Saket 1 year, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Raghav Jindal 1 year, 10 months ago

Circumference of circle=2πr 4π=2πr 2=r Similarly, 8π=2πr 4=r Area = πr² π×4×4 16π unit²

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Gurleen Dhillon 1 year, 10 months ago

2πr=4π πr=4π2/2 πr=2π Put the values =r=2 Area of circle πr2 Put values Ans -88/7

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A TV tower stands vertically on a bank of a canal from a point on the other bank of a canal from a point on the other bank directly opposite the tower the angle of elevation of the top of the tower is 60 degree from elevation of from a point 20 m away from this point on the same bank the angle of elevation of the top of the tower is 30 so a find the with of the canal b find the height of the tower c find the distance between top of the tower and point the third find the distance between stop of the tower c

Posted by Rudresh Yadav 1 year, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

✓5

Posted by Vedant Bhosale 1 year, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Yatharth Yadav 1 year, 10 months ago

Bhosale🤣🤣🤣

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Raghav Jindal 1 year, 10 months ago

2.23606798

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√3sin = cos find value of 3cos² +2 cos / 3cos+2

Posted by Jigyasa Madaan 1 year, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Shubham Pathak 1 year, 10 months ago

√3 sinΦ = cosΦ => tanΦ = √3 Φ = 60° ,then 3cos²+ 2 cos/3cos +2 => 3 * 1/4 + 2* 1/2 // 3* 1/2 +2 => 3/4 + 1 // 3/2 +2 => 7/4 * 2/7 = 1/2

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Vedant Bhosale 1 year, 10 months ago

Wrong spelling

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Vedant Bhosale 1 year, 10 months ago

Byr

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Blue print of mathematics

Posted by Sampat Rashmi Patro 1 year, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Pooja Naval 1 year, 9 months ago

Same search 🔍 on Google you definitely find it

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Vipin Khola 1 year, 10 months ago

Ufnk

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Solve for x: (x+1/x-1)+(x-2/x+2)=4-(2x+3/x-2)

Posted by D.Thrishanth Reddy 1 year, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Naitik Nama 1 year, 9 months ago

Let's solve your equation step-by-step. �+1�−1+�−2�+2=4−(2�+3�−2) 2�2+�−1�=−2�2+6�−3� Step 1: Multiply both sides by x. 2�2+�−1=−2�2+6�−3 Step 2: Multiply both sides by x. 2�3+�2−�=−2�3+6�2−3� 2�3+�2−�−(−2�3+6�2−3�)=−2�3+6�2−3�−(−2�3+6�2−3�)(Subtract -2x^3+6x^2-3x from both sides) 4�3−5�2+2�=0 �(4�2−5�+2)=0(Factor left side of equation) �=0or4�2−5�+2=0(Set factors equal to 0) �=0 Check answers. (Plug them in to make sure they work.) �=0(Doesn't work in original equation)

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If the sum of the first 14 terms of an AP is 1050 and its first term is 10 find the 20th term

Posted by Atharv Mishra 1 year, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Rohan Baisoya 1 year, 10 months ago

20th term is200

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जय श्री राम🚩🚩 .... 1 year, 10 months ago

Here, S14 = 1050, n = 14, a = 10. We know that Sn = (n2)[2a+(n−1)d] Substituting the values we have, 1050=(142)[20+13d] ⇒1050=140+91d ⇒910=91d ⇒d=10 Therefore, a20=10+(20–1)×10=200 i.e. 20th term is 200.

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D.Thrishanth Reddy 1 year, 10 months ago

200 is the 20th term

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A chord of circle is 20 cm in length and its distance from the center is 24cm. Find the radius of circle

Posted by Aayushi Singh 1 year, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Piyush Sahani 1 year, 10 months ago

24•24-20•20=√176=14

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Aditya Bansal 1 year, 10 months ago

26 cm ( by using Pythagoras theorem )

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जय श्री राम🚩🚩 .... 1 year, 10 months ago

Here, AB = 20cm and OC = 24cm Now, AC=CB=2AB=10cm (perpendicular drawn from centre of the circle to the chord,bisects the chord) Then using Pythagorean Theorem: OA=(AC2+OC2)=(102+242)=676=26

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D.Thrishanth Reddy 1 year, 10 months ago

26cm is radius

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A solid is in the form of a cylinder with hemispherical end . The total height of the solid is 20cm and diameter of cylinder is 7cm . Find the total volume of solid . (use pie =22/7)

Posted by Navneet Kaur Sekhon 1 year, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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3+3√2+√2

Posted by Og Youweee 1 year, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Piyush Sahani 1 year, 10 months ago

3+3√4

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Navneet Kaur Sekhon 1 year, 10 months ago

3+4√2

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Diva Shah 1 year, 10 months ago

Therefore 3(1+√3)

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Diva Shah 1 year, 10 months ago

It's 3+3√3

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Outside a circle of centres TP and tq are drawn to a circle prove that what is the right bisector of a line segment PQ

Posted by Harshith M. V 1 year, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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Let a and b be two positive integers such that a=p²q⁴and b=p²q³,where p and q are prime numbers. If hcf(a,b)p q and lcm (a,b)=pŕ qş,then (mtn)(rts)

Posted by Sumit Kumar 1 year, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The x-coordinate of a point P is twice it's y-coordinate . If P is equidistant from Q(2,-5) and R(-3,6) , find the co-ordinates of P .

Posted by Gaurav Narwar 1 year, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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A man earns 600rs per month more than his wife. One tenth of the man's salary and one sixth of the salary amount to 1500 which is saved every month find their income

Posted by Niti Viramgama 1 year, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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Hlo friends plz asa koi chapters btado Jo asan ha aur paper ma ps hoja unko krka

Posted by Rakhi Negi 1 year, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Swayam Mani Gautam 1 year, 10 months ago

Polynomial

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Maths laboratory activity 32 solution

Posted by Jayesh Ahire 1 year, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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Find the cubic polynomial with the sum Sum of the product of its zeros taken to at a time and the product of its zeros at 5 - 2 and - 24 respectively

Posted by Naidile C Dharwad 1 year, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Nikita Yadav 1 year, 9 months ago

Cubic polynomial=x³-(5)x²+(-2)x-(-24) =x³-5x²-2x+24

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If √3_1\√3+1

Posted by Satyam Yadav 1 year, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Diva Shah 1 year, 10 months ago

1/2+√3

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Given a=3,n=8,S=192, find d

Posted by Aman Khan 1 year, 10 months ago

CBSE > Class 10 > Mathematics

5 answers

Navpreet Bal 1 year, 10 months ago

Sn=n/2[2a+(n–1)d] 192=8/2[2×3+(8–1)d] 192=4[6+7d] 192-42=6+7d 48=6+7d 48-6=7d 42=7d d=42/7 d=6

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Pratiksha Yadav 1 year, 10 months ago

D = 6

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Aman Khan 1 year, 10 months ago

Kaise

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Jatin Bansal 1 year, 10 months ago

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Nandini . 1 year, 10 months ago

D=6

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Hlw friends.......Exam ki preparation kaisi chal rahi hai.. 🥰

Posted by Chinki 🦋👈🏻 1 year, 10 months ago

CBSE > Class 10 > Mathematics

5 answers

Ashish Yadav 1 year, 10 months ago

Tagri

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Aman Khan 1 year, 10 months ago

Achhe se chal rahi h

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Saumya Singh 1 year, 10 months ago

Baith gyi hai

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Shubham Pathak 1 year, 10 months ago

Bas chal hi rhi hai , kash daurti !!

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Priya Yadav 1 year, 10 months ago

Thik chal rahi hai

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What is 2 + 2

Posted by Salim Siddiqui 1 year, 10 months ago

CBSE > Class 10 > Mathematics

5 answers

Jatin Bansal 1 year, 10 months ago

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Shubham Pathak 1 year, 10 months ago

1Thank You

Om Kumar 1 year, 10 months ago

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Nikhil Ranjan 1 year, 10 months ago

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Salim Siddiqui 1 year, 10 months ago

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(a+b)(a-b)=

Posted by Dattatrey Mangavati 1 year, 10 months ago

CBSE > Class 10 > Mathematics

5 answers

Abhishek Dubey 1 year, 10 months ago

a²-b²

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𝕷𝖊𝖌𝖊𝖓𝖉 🏆 🍑 🎀 𝒜𝓁☯𝓃𝑒 𝑅𝒶𝓈𝒽𝒾 🎀 🍑 1 year, 10 months ago

a²-b²

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Pratha Shrivastava 1 year, 10 months ago

a²-b²

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Radhika Bhardwaj 1 year, 10 months ago

a²-b²

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Dattatrey Mangavati 1 year, 10 months ago

a²-b²

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If tan theeta =a/x then x/root off a square +xsqure

Posted by Noufal Kasala 1 year, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Preeti Dabral 1 year, 10 months ago

Value of {tex}\frac{x}{\sqrt{a^2+x^2}}{/tex}

{tex}\tan \theta=\frac{\mathrm{a}}{\mathrm{x}} Since, \begin{aligned} & \frac{x}{\sqrt{a^2+x^2}} \\ & \Rightarrow \frac{\frac{a}{\tan \theta}}{\sqrt{a^2+\left(\frac{a}{\tan \theta}\right)^2}} \\ & \Rightarrow \frac{\frac{a}{\tan \theta}}{\sqrt{a^2+\frac{a^2}{\tan ^2 \theta}}} \end{aligned} {/tex}

{tex}\begin{aligned} & \Rightarrow \frac{\frac{a}{\tan \theta}}{a \sqrt{\frac{1+\tan ^2 \theta}{\tan ^2 \theta}}} \\ & \Rightarrow \frac{\frac{1}{\tan \theta}}{\sqrt{\frac{1+\tan ^2 \theta}{\tan ^2 \theta}}} \\ & \Rightarrow \frac{1}{\sqrt{\sec ^2 \theta}} \\ & \Rightarrow \frac{1}{\sec \theta} \end{aligned}{/tex}

{tex}\Rightarrow \cos \theta {/tex}

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