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Can anyone tell me that what is the imp question from chapter 12 for standard maths

Posted by Palak Sharma 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Prachi Shukla 5 years, 2 months ago

All given figure vale questions important h or exercise 12.3 me 2nd, 4th question very important h or 12.3 exercise se jyada questions aate h board me

Ayush Singh Chauhan 5 years, 2 months ago

All question of exercise 12.3

ANSWER

The class students of second a

Posted by Dipali ?? 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

From a point on the ground, the angles of elevation of the bottom and the top of a transmission tower fixed at the top of a 20m high building are 45 degree and 60 degree respectively. Find the height of the tower.

Posted by Prachi Shukla 5 years, 2 months ago

CBSE > Class 10 > Mathematics

5 answers

Prachi Shukla 5 years, 2 months ago

Thank you

Himanshu Pandey 5 years, 2 months ago

????? ??? ?? ??? ???? ??? ???? ?? ???? ????? ??? ??? ???? ???? ?? ?? ????? ????? ?? ???..

Himanshu Pandey 5 years, 2 months ago

✓?? ???? ?

Himanshu Pandey 5 years, 2 months ago

??? ??? ?????? ?? ????? =? »?? ???????? ???, »???45=??/?? »1/1=20/?? (?? ????? ????????) »??=20? »?? ???????? ???, »???60=??/?? »✓3/1=20+?/20 (?? ????? ,,,,,,) »20✓3=20+? »20✓3-20=? »20(✓3-1)=? »?????? ?? ??? ????? =? »20(✓3-1)? ???.

Khushi 5 years, 2 months ago

Let DC be the tower and BC be the building. Then,CAB=45°,DAB=60°,BC=20m Let height of DC=hm In∆ABC, tan 45°= BC/AB = 1=20/AB =AB=20m, In right∆ABD, tan 60°= BD/AB =√3=h+20/20 = h=20(√3-1)m

ANSWER

For what value of k the equation (k+3)x²-5(5-k)x+1=0 has roots

Posted by Aryan Pethakar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Class 10th find C if the system C x + 3 y + ( 3 - C )=0 and 12x +Cy =0 has infinitely many solution

Posted by Monu Sahu 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Pushpa Chauhan 5 years, 2 months ago

Jayada briefly nahi ho payega .plz try to understand.

Pushpa Chauhan 5 years, 2 months ago

Solution C/12= 3/C cross multiply .C= ✓36.C=6. ans

ANSWER

Koi mujhe oswaal sample paper provide kra do please

Posted by Aman Gurjar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

☞Cheenu☜ ▄︻̷̿┻̿═━一 ? 5 years, 2 months ago

How

Aditya Kumar 5 years, 2 months ago

Please mention your address

Aditya Kumar 5 years, 2 months ago

Ok

Luv Singh 5 years, 2 months ago

Theek hai

ANSWER

Express 156 as the product of prime

Posted by Xyz Xyz 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Irfan Khan 5 years, 2 months ago

Okk

Amaan Khan 5 years, 2 months ago

2×2×3×13 (Take lcm of it )

ANSWER

Cabse test paper kaise download karu plz bata do

Posted by Gautam Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Gautam Sinha 5 years, 1 month ago

Ha hai

Aditya Kumar 5 years, 2 months ago

Youtube per jakar dekh lo

ANSWER

Find a quadratic polynomial , the sum of whose zero is 8 and their product is 12 . Hence find the zeroes of the polynomial.

Posted by Khushi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Khushi 5 years, 2 months ago

Thanks

Sarthak?? Jaiswal 5 years, 2 months ago

A(alpha)+B(beta)=8 A(alpha)×B(beta)=12 as we know, A+B=-b/a therefore, -b/a=8/1 so, b=-8,a=1 Now as we know, A×B=c/a therefore, c/a=12/1 so, c=12 Now,as we know quadratic polynomials are in the form of ax²+bx+c=0 therefore, x²-8x+12=0 x²-4x-3x+12=0 x(x-4)-3(x-4)=0 (x-4)(x-3)=0 Now, if, x-4=0 Therehore, x=4 And, if, x-3=0 Therefore, x=3.

Sarangi Jayakumar 5 years, 2 months ago

x2-8x+12

ANSWER

If xy = 180 and HCF (x,y)=3, then find the LCM (x,y).

Posted by Dinesh Faujdar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Charu Gaikwad 5 years, 2 months ago

LCM × HCF = Product of two numbers LCM × 3 = 180 LCM = 180÷3 LCM = 60

Vishvesh Gupta 5 years, 2 months ago

60

Dinesh Faujdar 5 years, 2 months ago

We now that, "LCM × HCF =product of two number" (LCM)(3) = 180 LCM = 60

ANSWER

A garden roller has a circumference of 4m.find the number of revolution, it makes in moving 40 m

Posted by Palak Sharma 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Palak Sharma 5 years, 2 months ago

Can you please solve more easily

Rishav Kumar 5 years, 2 months ago

10

Good Day 5 years, 2 months ago

Circumference of circle= 4m 2×22/7×r = 4 r = 4×7/44 r =7/11 Let n number of revolution makes in moving 40m n × 2 ×22/7×r = 40 n ×4 = 40 n = 40/4 n = 10

ANSWER

If a+c= b then find the roots of ax2+ bx+ c

Posted by Aanya Jain 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Aanya Jain 5 years, 2 months ago

Please provide complete solution

Aditya Kumar 5 years, 2 months ago

Roots = -c/a, -1

Aditya Kumar 5 years, 2 months ago

This question solved by quadratic equations formula

ANSWER

624+68756

Posted by Ayaan Virani 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Rishav Kumar 5 years, 2 months ago

khud se kr le.... 10th mein aakr division nhi pucchte

Prachi Shukla 5 years, 2 months ago

624+68756=69380

Good Day 5 years, 2 months ago

69380

ANSWER

99/4

Posted by Manali S 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Prachi Shukla 5 years, 2 months ago

24.75

Good Day 5 years, 2 months ago

24.75

ANSWER

Evaluate : (I) sin square 63 degree + sin square 27 degree / cos square 17 degree + cos square 73 degree (ii) sin 25 degree × cos 65 degree + cos 25 degree × sin 65 degree

Posted by Prachi Shukla 5 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

Good Day 5 years, 2 months ago

Welcome bro

Prachi Shukla 5 years, 2 months ago

Thanks broo

Good Day 5 years, 2 months ago

2 = Sin 25° × Cos 65° + Cos 25°× Sin 65° =Sin 25°× Sin(90°-65°) + Cos 25°× Cos(90°-65°) = Sin^2 25°+ Cos^2 25° Using identities Sin^2A + Cos^2A=1 = 1

Good Day 5 years, 2 months ago

1 = sin ^2 63° + sin ^2 27°÷cos^2 17°+ cos ^ 73° = Sin^2 63° + cos^2(90°- 27°)÷sin^2 ( 90°-17°)+ cos^2 73° = Sin^2 63° + cos^2 63°÷ sin^2 73° + cos^2 73° Using identities Sin^2A + Cos^2A= 1 =1÷1 Ans :1

ANSWER

In triangle OPQ, right angled at P, OP = 7cm and OQ - PQ =1cm. Determine the value of sinQ and cosQ.

Posted by Prachi Shukla 5 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

Prachi Shukla 5 years, 2 months ago

Ha ncert ka h

Good Day 5 years, 2 months ago

Given: OP=7cm, OQ-PQ =1 OQ = 1+ PQ OQ^2 = OP^2 + QP^2 (1 + PQ) = 7^2 + PQ^2 1 + 2PQ + PQ^2 = 49 + PQ^2 2PQ = 48 PQ = 24 OQ = 1+PQ = 1+ 24 = 25 SinQ = OP÷OQ = 7÷25 CosQ = QP÷OQ = 24 ÷ 25

Himanshu Pandey 5 years, 2 months ago

Ncert ka h

Himanshu Pandey 5 years, 2 months ago

Ye question kis page me hai

ANSWER

The kendriya vidyalaya is a sangathan

Posted by Vinita Ranjan 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Rishav Kumar 5 years, 2 months ago

no, i own it

ANSWER

If the triangles are similar. Find the missing AC=?

Posted by Siddhivinayak Burud 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

For 3x - 7y= 10, Express y in terms of x

Posted by Akash Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Vivek Singh 5 years, 1 month ago

for 3x -7y =10express yin term of x

Good Day 5 years, 2 months ago

3x - 7y = 10 -7y = 10 - 3x y = 10 - 3x÷ -7 Or 3x -10/7

Karan Rana 5 years, 2 months ago

y=3x-10/7

ANSWER

A shopkeeper buys a number of book for 1200.if he had bought 10 more books for the same amount each book would have cost him 20 lens's how many books Didi he buy

Posted by Abhay Vyas 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If all the zeroes of cubic polynomial x^3+ax^2-bx+c are both negative then a b and c all have the

Posted by Shivam Sharma 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The radio of two circles are 8cm and 6cm respectively find the radius of the circle having area equal to the sum of the areas of the two circles.

Posted by Saniya Khan 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Sarangi Jayakumar 5 years, 2 months ago

Radius is 10cm

Sarthak?? Jaiswal 5 years, 2 months ago

Yes, radius=10 cm

Sivaramakrishnan Elayaraja 5 years, 2 months ago

10 is the radius

ANSWER

5x -37=1

Posted by Vivek Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

Good Day 5 years, 2 months ago

5x - 37 =1 5x = 1+37 5x = 38 x = 38/5 x = 7•6

Prachi Shukla 5 years, 2 months ago

Ans - 7.6

Khushi Sharma 5 years, 2 months ago

5x-37=1 5x = 1+37 5x = 38 x = 38 /5 x = 7.6

Mohit Kumar 5 years, 2 months ago

5x=38=x =38/5 =x=7.6

ANSWER

TanA/1-cotA=CotA/1-TanA=1+Sec.CosecA

Posted by Mohit Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Good Day 5 years, 2 months ago

Bhai left side me equal to ki jagah plus rahega.

Mohit Kumar 5 years, 2 months ago

Prove that

Tejas .M 5 years, 2 months ago

G

ANSWER

2+√2

Posted by Sahil Upadhyay 5 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

Suneha Sharma 5 years, 2 months ago

Irrational

Archi Jain 5 years, 2 months ago

Irrational

Nandini Soni 5 years, 2 months ago

Irrational

Ranjan Dutta 5 years, 2 months ago

rational

ANSWER

Define the principal focus of a concave mirror

Posted by Prem Kumar Nayak 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Mohit Kumar 5 years, 2 months ago

Other wise this question is from physics not mathematics

Mohit Kumar 5 years, 2 months ago

The principal focus of a concave mirror is a point on it's principal axis to which all the light Ray's which are parallel and close to the axis,converge after reflection from the concave mirror

ANSWER

An aeroplane leaves an airport and flies due north at a speed of 1000 km per hour.At the same time, another aeroplane leaves the same airport and flies due west at a speed of 1200 km per hour. How far apart will be the two planes after one and half hours

Posted by Uju Manohar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Bipin Kumar 5 years, 2 months ago

Speed of aeroplane due north = 1000 km/h Time = 3/2 hr We know that, Distance = speed * time = 1000*3/2 = 1500km Now, Speed of aeroplane due west = 1200km/h Time =3/2hr We know that, Distance = speed *time = 1200*3/2 = 1800km Now, Using Pythagoras theorem, After finding, we get Distance between two aeroplane after 3/2 hr= 300√61km

ANSWER

Time table kab aayega if any one knows please tell me

Posted by Krazy Girl 5 years, 2 months ago

CBSE > Class 10 > Mathematics

5 answers

Kiran Kumari 5 years, 2 months ago

2nd February 2021

Bipin Kumar 5 years, 2 months ago

2 feb 2021 ko......

Khushi Dhir 5 years, 2 months ago

About which timetable you r asking ??

Himanshu Rajput 5 years, 2 months ago

March

Lipsa . 5 years, 2 months ago

Soon.

ANSWER

Prove that under two is an irrational number

Posted by Vishal Singh 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Solve for x and y : 0.5x - 0.1y = 0.7

Posted by Lizyba 28 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Happy Singh 5 years, 2 months ago

0.5x-0.1y=0.7 Multiplying both sides by 10 we gets 5x-y=7 In this way we can simplify another equation too which you haven't written here Hope you found some help from this

ANSWER

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