No products in the cart.

If in two circles, arcs of …

CBSE, JEE, NEET, CUET

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

If in two circles, arcs of the same length subtend angles 60° and 75° at the centre, find the ratio of their radii

Posted by Stanzin Namgial 7 years, 10 months ago

CBSE > Class 11 > Mathematics

2 answers

Gaurav Bansal 7 years, 10 months ago

Correct answer is 5:4

Samriddhi Singh 7 years, 10 months ago

In this only u have to put the formula of Theta=L/R Let for 1st circle. Length be L Radius be R. Theta=60°=π/3 ....... Converted in radians. Therefore,..... Theta=L/R R=L/Theta.........(I) Therefore ... R=L/π/3....=3L/π. For 2nd circle . Length is same ...As A/c to question . Therefore Length=L Radius =R'. (Let) Theta=75°=7π/9.........(ii) Therefore, R'=L/7π/9. R'=9L/7π. ....... Now ratio...Of their radii... R/R'=3L/π÷9L/7π. R/R'=7/3. Ratio=7:3

ANSWER

https://examin8.com

Test

Related Questions

Find the equation of a circle with centre (2,2) and passes through the point (4,5)

Posted by Sethpoulou Apoulou 1 year, 5 months ago

CBSE > Class 11 > Mathematics

0 answers

2nC2:nC3=33:10

Posted by K.Y K 1 year, 5 months ago

CBSE > Class 11 > Mathematics

0 answers

(3+i)x + (1-2i) y +7i =0

Posted by Ananya Sv 1 year, 5 months ago

CBSE > Class 11 > Mathematics

1 answers

Ch 1 ke questions

Posted by Nitin Kumar 1 year, 4 months ago

CBSE > Class 11 > Mathematics

1 answers

Express the complex number i-39

Posted by Sana Dharwad 1 year, 4 months ago

CBSE > Class 11 > Mathematics

0 answers

The sum of two numbers is 6 time its geometric mean show that numbers are in the ratio (√3 +2): (3-2√2)

Posted by Shubham Jaat 1 year, 5 months ago

CBSE > Class 11 > Mathematics

0 answers

Find the product. (4x²) (–5³)

Posted by Manoj Thakur 1 year, 5 months ago

CBSE > Class 11 > Mathematics

0 answers

Prove that sin square 8x - sin square 3x =sin11x.sin5x

Posted by Sabin Sultana 1 year, 4 months ago

CBSE > Class 11 > Mathematics

0 answers

Modern ABC class 11 mathematics solutions chapter 2 relation and functions

Posted by Gurleen Kaur 1 year, 5 months ago

CBSE > Class 11 > Mathematics

0 answers

Square of 169

Posted by Ashish Chaudhary 1 year, 4 months ago

CBSE > Class 11 > Mathematics

1 answers

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App