CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

Ask questions which are clear, concise and easy to understand.

Ask Question

If cosQ=4/5then evaluate tanQ

Posted by Abcd Abcd 3 years, 4 months ago

2 answers

Mahak Yadav 3 years, 4 months ago

CosQ =QR/PQ CosQ=4/5 Let QR=4k and PQ=5k By Pythagoras theorem PQ square= PR square +QR square (5k) square = PR square+ 4k square 9k square=PR square 3k = PR TanQ = PR/QR TanQ= 3k /4k TanQ = 3/4

0Thank You

👌Aditya 👌 👌Kumar👌 3 years, 4 months ago

CosQ = b/h = 4/5 TanQ = p/b = 3/4

0Thank You

ANSWER

The sum of the square of 3 consecutive integers is 110,then the smallest postive integer is?

Posted by ✨ 🦋 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the value of k so that the lines 2x-3y=9 and kx-9y=18 will be parallel

Posted by Vaishnavi Gite 3 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Mahak Yadav 3 years, 4 months ago

2/k=3/9 Cross multiplication 18 = 3k k=18/3 k=9

0Thank You

ANSWER

1/12-1/15

Posted by Latha .M. 3 years, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

Mahak Yadav 3 years, 4 months ago

1/165

1Thank You

Latha .M. 3 years, 4 months ago

1/60

3Thank You

ANSWER

What is even

Posted by Khushi 1 3 years, 4 months ago

CBSE > Class 10 > Mathematics

3 answers

Raj Patel 3 years, 4 months ago

2 4 6 8 10 12 14 16 18 20

0Thank You

Satyam Sinha 3 years, 4 months ago

The numbers which are divisible by 2.

0Thank You

Khushi 1 3 years, 4 months ago

1Thank You

ANSWER

2x × 3 =35

Posted by Mehul Patkar 3 years, 4 months ago

CBSE > Class 10 > Mathematics

3 answers

Mahak Yadav 3 years, 4 months ago

x=35/2×3 x= 35/6 x= 5.833

0Thank You

Satyam Sinha 3 years, 4 months ago

x=35/3×2

0Thank You

Vivek Vivek 3 years, 4 months ago

x= 5.8333......

1Thank You

ANSWER

Best guide for maths

Posted by Pavan Pranav 3 years, 4 months ago

CBSE > Class 10 > Mathematics

4 answers

Satyam Sinha 3 years, 4 months ago

Rs aggarwal

0Thank You

Vaibhav Yadav 3 years, 4 months ago

1Thank You

.. .. 3 years, 4 months ago

Rs Or Rd

1Thank You

Vivek Vivek 3 years, 4 months ago

NCERT

0Thank You

ANSWER

X-2y=-7 and 4X+3y=5 substitution elemination method

Posted by Apoorva Madgonkar 3 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Misbah Ur Rehman 3 years, 4 months ago

x=-1& y=3

0Thank You

ANSWER

Factorisation of 2x²–45x+324

Posted by Mrudul Patel 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

.Solve the following equation by using factorization method:x2 -(2b-1)+(b2 -b-20)=0

Posted by ꜱᴜʀyᴀɴꜱʜ Tomar 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Ex 3.3 1st Roman 3rd sum solution

Posted by Education Shree Mathi 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Verify experimentally that the sum of first n odd natural number is n square.

Posted by Shaurya Pratap Singh 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

2x2 + x-3 + (3x+4)

Posted by Aditya Salunke 3 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Piyansh Gedam 3 years, 4 months ago

4+9x²-2y+12

0Thank You

ANSWER

Assianmnt of probability of rainfaal in Andhra Pradesh and punjab

Posted by Channi Kaur 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If Q (0,1) is equidistant from p (5,-3) and R (x,6) find the values of x, also find the distances qr and pr

Posted by Rishitha Reddy 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Prove that 3+5root2 is an irrational number

Posted by Account Deleted 3 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Account Deleted 3 years, 4 months ago

Give answer fast

4Thank You

ANSWER

2x+3y-7

Posted by Vinay Sharma 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Solution of Rd sharma

Posted by Gaming Total 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

HCF of 26676 and 3375542

Posted by Gloxiagirilin Suting 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What is tan

Posted by Abhirup Kuri 3 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Vivek Vivek 3 years, 4 months ago

P/B

0Thank You

ANSWER

√2x+√3y=7;√3x+√2y=4

Posted by Vishal Raj 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Solve for x: 99x+101y=499 101x+99y=501

Posted by Shahin . 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

5+x/5-x - 5-x/5+x =15/4

Posted by Anamika Bajpai 3 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Anamika Bajpai 3 years, 4 months ago

Answer plz

0Thank You

ANSWER

Prove that 3÷√2 is an irrational number

Posted by Himanshi Goyal 3 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Satyam Sinha 3 years, 4 months ago

Let √2 be a rational no. Then it can be written in the form of p/q,where p and q having a common factor other than 1 ,q is not = 0. A/Q

1Thank You

ANSWER

Solve the following pair of linear equations by the substitution method.. x+y=14 x-y=4

Posted by Khushi Sharma 3 years, 4 months ago

CBSE > Class 10 > Mathematics

4 answers

Khushi Sharma 2 years, 11 months ago

Pls can anybody tell me difference between asexual and sexual reproduction?

0Thank You

Vivek Vivek 3 years, 4 months ago

x= 9 and y= 5

2Thank You

Piyush ❤️ 3 years, 4 months ago

But kasa solve krka send kru

1Thank You

Khushi Sharma 2 years, 11 months ago

Pls anybody answer🙏

0Thank You

ANSWER

Consider the numbers 4^n where n is a natural number.check whether there is any value of n for which 4^n ends with the digit zero.

Posted by Ravinder Madheshiya 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

prove that √3+ √5 is irrational

Posted by Sekhar Borthakur 3 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Himanshu Chauhan 3 years, 4 months ago

Given √3 + √5 To prove: √3 + √5 is an irrational number. Let us assume that√3 + √5 is a rational number. So it can be written in the form a/b √3 + √5 = a/b Here a and b are coprime numbers and b ≠ 0 Solving √3 + √5 = a/b On squaring both sides we get, (√3 + √5)² = (a/b)² √3² + √5² + 2(√5)(√3) = a²/b² 3 + 5 + 2√15 = a²/b² 8 + 2√15 = a²/b² 2√15 = a²/b² – 8 √15 = (a²- 8b²)/2b a, b are integers then (a²-8b²)/2b is a rational number. Then √15 is also a rational number. But this contradicts the fact that √15 is an irrational number. Our assumption is incorrect √3 + √5 is an irrational number. Hence, proved.

0Thank You

ANSWER

find the solution of the pair of equations x/10+y/5-1=0 and x/8+y/6=15. Hence find k such that y=kx+5

Posted by Smriti Singh 3 years, 4 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If alpha and beta are the zeros of polynomial 3x square plus 5x + 2 find the value of 1 upon Alpha + 1 upon beta

Posted by Krishan Murari 3 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Rose Preet 3 years, 4 months ago

3x²+5x+2 3x²+3x+2x+2 3x(x+1) +2(x+1) (X+1)(3x+2) X+1is equal to 0 Then x is equal to -1 Here we can say that alpha is equal to -1 Similarly, If we take 3x +2 Beta is equal to x is eqal to -2/3 1/alpha+ 1/beta 1/-1 +1/-2/3 Is eqal to -5/3

0Thank You

ANSWER

Find the sum of 101 terms of an arithmetic progression if 51st term is -2

Posted by Jyoti Singh 3 years, 4 months ago

CBSE > Class 10 > Mathematics