0

Guest

Courses New

if sin(theta) +sin(phi)=a and cos(theta) + cos (phi)=b, then find cos2(theta) + cos2(phi)

if sin(theta) +sin(phi)=a and cos(theta) + cos (phi)=b, then find cos2(theta) + cos2(phi)

Grade:11

1 Answers

poojitha
42 Points
4 years ago
sin (theta)+sin(phi)=a,cos(theta)+cos(phi)=b,sin(theta)+0=a,cos(theta)-1=b,cos2(theta)+cos2(phi)                =cos2(theta)+1=cos^2(theta)-sin^2(theta)+1=(b+1)2-a2+1=b2-a2+2b+2

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on Trigonometry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More