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If R(x,y) is a point on line segment joining the points P(6,-8) and Q(-8,6). Prove that (x+y+2)=0

Posted by Prabhjeet Singh 6 years, 11 months ago

1 answers

Saurabh Yadav 6 years, 11 months ago

since R is the mid point. PR : QR = 1:2 m:n=1: 2 By section formula R (x,y)=(mx2 +nx1÷m+n,my2+ny1÷m+n) =(1×-8+2×6÷1+2,1×6+2×-8÷1+2) =(-8+12÷3,6-16÷3) =(4÷3,-10÷3) Now,,x=4÷3,y=-10÷3 3x=4 ,3y=-10 =3x+4 eqn.1,=3y+10 eqn.2 Comparing eqn.1 and 2 =3x+4=3y+10 =3x-3y+4-10=0 =3x-3y-6=0 =-3(x+y+2)=0 -3 not equal to 0 =x+y+2=0 Hence Proved

1Thank You

ANSWER

Circles all theorem

Posted by Yash Ramchandani 6 years, 11 months ago

CBSE > Class 10 > Mathematics

5 answers

Puja Sahoo? 6 years, 11 months ago

It will take too much time to type, and I don't know how to send pic........ .?

2Thank You

Chētnà Pandey✌️ 6 years, 11 months ago

Thnx Anushka

0Thank You

Anushka Jugran ? 6 years, 11 months ago

I mean right

1Thank You

Anushka Jugran ? 6 years, 11 months ago

Ya, chetna is Wright

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Chētnà Pandey✌️ 6 years, 11 months ago

Consult Google baba ?he can solve your problem?...........actually☺️ bhj toh deti but bhot lamba ho jayega?

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1 ball 2 bat so

Posted by Subhan Ansari 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

@ Aashu 6 years, 11 months ago

Plz explain ur question a bit more ..

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Chētnà Pandey✌️ 6 years, 11 months ago

What's the question?

2Thank You

ANSWER

Chapterwise blue print of maths pls share if anyone havr

Posted by Raaghib Rahim 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Raunak Pandey ?? 6 years, 11 months ago

You can get it from cbse official website

2Thank You

Chētnà Pandey✌️ 6 years, 11 months ago

I have the blue print but how can I share here?

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ANSWER

water is flowing at us the rate of 15 km per hour through a pipe of diameter 14 cm into a cuboidal. Which 50 m long and 44 m wide in what time will the level of the water in the pond will rise by 21 CM

Posted by Prateek Pandey 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Ram Kushwah 6 years, 11 months ago

Volume of water in cuboid

=50×44×21/100=462 M3…...(1)

Let after t hrs the level goes up 21 cm, so water length l=15×1000×t=15000 t m

Vol of water flowing =22/7×7×7×15000t/(100×100)=231t m3…....(2)

From (1) and (2)

231 t=462

t =2 hr

0Thank You

Oviya Oviya 6 years, 11 months ago

Method Bigger volume÷smaller volume

1Thank You

Oviya Oviya 6 years, 11 months ago

2 hrs

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ANSWER

If Alfa and bita are the zeroes of the polynomial X square -5x+k such that alfa-beta=1,find the value of k.

Posted by N Hussain 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

K=4......................okkkk

2Thank You

ANSWER

Class 10 board exam 2019 ka project work kaun 2 banana h please help me

Posted by Kaushal Sharma 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

2-√3 is an irrational no. Prove that

Posted by Ritesh Tanwer 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Lionel Messi⚽️ 6 years, 11 months ago

Please 5 ki jagah 2 rakhna . Baki sabh teekh hai.

1Thank You

Lionel Messi⚽️ 6 years, 11 months ago

• Let us assume , to the contrary , that 2 - root 3 is rational. •That is ,we can find coprime a and b (b= not epuals to 0) such that 2- root 3= a/b. • Therefore , 2- a/b= root 3. • Rearranging this equation, we get root 3 = 5-a/b= 5b-a/b. • Since a and b are integers, we get 5-a/b is irrational, and so root 3 is rational. •But this contradicts the fact that root 3 is irrational. • This contradiction has arisen because of our incorrect assumption that 5-root 3 is rational. • So , we concluded that 5-root 3 is irrational. ● HENCE PROVED

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ANSWER

Cosec²63° + tan²24°/cot ²66° + sec²27°

Posted by Jagdeep Singh Saini 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Madhu Singh 6 years, 11 months ago

1Thank You

Oviya Oviya 6 years, 11 months ago

1Thank You

Honey ☺☺☺ 6 years, 11 months ago

3Thank You

ANSWER

235+456

Posted by Jiten Verma 6 years, 11 months ago

CBSE > Class 10 > Mathematics

7 answers

Ramandeep Bhariwasia 6 years, 11 months ago

Hamare to 17 se h

0Thank You

Chētnà Pandey✌️ 6 years, 11 months ago

691

0Thank You

Taranvir Sahil 6 years, 11 months ago

691

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Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

No.. 691

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Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

691......0

0Thank You

Jiten Verma 6 years, 11 months ago

781

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Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

O......

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2root3divided by5 is irrational

Posted by Ram Krishna Jha Jha 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Raunak Pandey ?? 6 years, 11 months ago

Its irrational

1Thank You

Priya Bansal 6 years, 11 months ago

No, it's irrational

3Thank You

Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

Nooooo

1Thank You

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Prove that the diagonals of a rectangle ABCD with vertices A(2,-1),B(5,-1)C(5,6)D(2,6) are equal and bisect each other

Posted by Nikhil Pandey 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Priya Bansal 6 years, 11 months ago

We use mid point formula in the coordinates of A and C. By this we find the intersecting point. Again we apply mid point formula in B and D coordinates and we get a intersecting points. Result will be equal so it is proved.

1Thank You

ANSWER

Find out the HCF and LCM of 24, 15 and 36 by prime factorization.

Posted by Dhyanu Kumar 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 6 years, 11 months ago

24 = 2 × 2 × 2 × 3
36 = 2 × 2 × 3 × 3
15 = 3 × 5
HCF = 3
LCM = 2 × 2 × 2 × 3 × 3 × 5 = 360

1Thank You

Priya Bansal 6 years, 11 months ago

HCF and LCM are 3&360 respectively

3Thank You

ANSWER

In right angle triangle.... :angle B=90 such that side AC-AB=1.....and BC=5....now find other two sides... And angle C... And A.............. Okkkk

Posted by Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

CBSE > Class 10 > Mathematics

5 answers

Raunak Pandey ?? 6 years, 11 months ago

Triangle ki sides asani se nikal ayengi - 12cm, 13cm ,5 cm then apply law consine to find the angle or you can also use trigonometry

3Thank You

Priya Bansal 6 years, 11 months ago

5*5+(x-1)(x-1)=x*x 25+x*x-2x+1=x*x 25-2x+1=0 26=2x X=13 AC=13 Then AB=13-1=12

2Thank You

Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

Ab Koi bhi answer de sakta hai

0Thank You

Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

Give.......

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Gurjar Naam ही भत्हैरा ??? 5 years, 8 months ago

Anushka give answer of this question...

1Thank You

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Write whether the rational no. 7/75 will be a Terminating decimal expansion or a non terminating repeating decimal expansion

Posted by Rahul Singh Minya Minya 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Piyush Kumar 6 years, 11 months ago

Non terminating repeating decimal

1Thank You

ANSWER

The sum of numerator and deno. Of a fraction is 12. if the denominator is increase by 3 the fraction become 1/2 find the fraction.

Posted by Vivek Chaurasiya 6 years, 11 months ago

CBSE > Class 10 > Mathematics

5 answers

Vaishnavi Singh 6 years, 11 months ago

1/3 is the right answer

0Thank You

Honey ☺☺☺ 6 years, 11 months ago

5by7

0Thank You

Anushka Jugran ? 6 years, 11 months ago

Sorry it's 1/2

1Thank You

Anushka Jugran ? 6 years, 11 months ago

Assume numerator be x then denominator is equal to 12-x. Put this in the 2nd equation x/12-x+3 is equal to 1/3

1Thank You

Vivek Chaurasiya 6 years, 11 months ago

Batao bhai koi answer

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What is formula for finding total surface

Posted by Abdul Ajees 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Chētnà Pandey✌️ 6 years, 11 months ago

2(lb+bh+hl) TSA of cuboid

0Thank You

Archana☺ Singh 6 years, 11 months ago

Kiska tsa

1Thank You

ANSWER

Math new model papers

Posted by Madan Mohan 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Construct an isosceles triangle whose base is 7 cm and altitude 4cm and then construct another similar triangle whose sides are 3 of 12 times the corresponding sides of the isosceles triangle?

Posted by Anks Thakkar 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Elina ❤️ 6 years, 11 months ago

This question to ask In Google........

0Thank You

Anushka Jugran ? 6 years, 11 months ago

Sorry, I can't solve it here

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ANSWER

We write tan =sin / cos...... And cos = 1/sec..so why we can't write cos =sin/tan........

Posted by Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

CBSE > Class 10 > Mathematics

4 answers

Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

Dedia....

1Thank You

Anushka Jugran ? 6 years, 11 months ago

Most welcome.. Ab aap BHI mere question ka motivational answer de dijiye

1Thank You

Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

Thanks for your motivational answer..... ?

0Thank You

Anushka Jugran ? 6 years, 11 months ago

Because tan is equal to sin/cos is an identity which we can use directly but cos is equal to sin/tan is derived from that.

1Thank You

ANSWER

Sin(A+B) =sinA+sinB

Posted by Nevin Johnson 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Anushka Jugran ? 6 years, 11 months ago

No, they r not equal

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If a^2+b^2=c^2 Then prove that:(a+b-c)^2=1

Posted by Siddhant Nawale 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

In a quadrilateral

Posted by Anusha Singh 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

In an Ap the sum of first 10 terms is -150 and sum of its next 10 terms is -550.find the A.P

Posted by Sushant Thareja 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Shweta Dhama 6 years, 11 months ago

AP will be 3,-1,-5,-9

0Thank You

Vanya Jain 6 years, 11 months ago

Sum of first ten terms = 10/2(a + (10-1)d) = 5(a+9d)=-150 .....1 Sum of first twenty terms = 20/2(a + (20-1)d = 10(a + 19d) ....2 Sum of first twenty - sum of first 10 = sum of next 10 terms=-550 So -150-10a - 19d = -550 = -10a -19d= 400 Substitute value of a from a in the terms of d and find that A. P.

2Thank You

ANSWER

IF secthita+ tanthita =p Then find the value of cosecthita

Posted by Tamman Patnaik 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 11 months ago

Sec2θ - tan2θ = 1

(secθ+tanθ)(secθ-tanθ)=1
or, secθ-tanθ=1/p ----------------(2)
Adding (1) and (2) we get,
2secθ=p+1/p
or, secθ=(p²+1)/2p
∴, cosθ=1/secθ=2p/(p²+1)
∴, sinθ=√(1-cos²θ)
=√[1-{2p/(p²+1)}²]
=√[1-4p²/(p²+1)²]
=√[{(p²+1)²-4p²}/(p²+1)²]
=√[(p⁴+2p²+1-4p²)/(p²+1)²]
=√(p⁴-2p²+1)/(p²+1)
=√(p²-1)²/(p²+1)
=(p²-1)/(p²+1)
∴, cosecθ=1/sinθ=1/[(p²-1)/(p²+1)]=(p²+1)/(p²-1)

<hr />

Another method:

Sec2θ - tan2θ = 1

(secθ + tanθ)( secθ - tanθ) = 1

p( secθ - tanθ) = 1

( secθ - tanθ) = 1/p and, ......-(1)

( secθ + tanθ) = p ..... - (2)

(1) + (2),

secθ = 1/2 (p + 1/p) ,

(2) - (1)

tanθ = 1/2 (p-1/p)

secθ / tanθ = cosecθ

Hence,

cosecθ = p +1/p / p-1/p = p2 +1 / p2 -1

</article>

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If p ,q and r are in AP , then prove that (p+2q-r)(2q+r-p)(r+p-q)=4pqr

Posted by Lionel Messi⚽️ 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Prove that (sinteta+coseteta)^2+(costeta+secteta)^2=7+tan^2teta+cot^2teta.

Posted by Kalpithaa Ram 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Honey ☺☺☺ 6 years, 11 months ago

In 1st line it will. be (sin +cosec)^2

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If the hcf of 210 and 55 is expressible in the form 210*5+55y then find y

Posted by Dinesh Hadapad 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Raunak Pandey ?? 6 years, 11 months ago

Applying Euclid division lemna on 210 and 55, we get 210 = 55 × 3 + 45☺️☺️ 55 = 45 × 1 + 10 ☺️ 45 = 4 × 10 + 5 ☺️ 10 = 5 × 2 + 0 ☺️ ☺️We observe that the remainder at this stage is zero. So, the last divisor i.e., 5 is the HCF of 210 and 55.☺️ ∴ 5 = 210 × 5 + 55y☺️ ⇒ 55y = 5 - 1050 = -1045☺️ ☺️∴ y = -19

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Formulate the following problem as a pair of equations and hence find their solutions. 2 women and 5 men can together finish an embroidery work in 4 days , while 3 women and 6 men can finish it in 3 days . Find the time taken by 1 women alone to finish the work and also that taken by 1 men alone .

Posted by Lionel Messi⚽️ 6 years, 11 months ago

CBSE > Class 10 > Mathematics