Home
Class 11
MATHS
Express sinA+sin3A and cosA+cos3A in pro...

Express `sinA+sin3A` and `cosA+cos3A` in product form

Text Solution

Verified by Experts

sinA+sin3A=2sin2AcosA , cosA+cos3A=2cos2AcosA
Promotional Banner

Topper's Solved these Questions

  • STRAIGHT LINES

    A N EXCEL PUBLICATION|Exercise QUESTION BANK|167 Videos

Similar Questions

Explore conceptually related problems

Express sin3A and cos2A in terms of sine function

Express sqrt3-i in polar form using the polar form of sqrt3+i

(i)Express (sin x-sin a) as a product.

If sinA=sinBand cosA=cosB , then prove that " sin "(A-B)/(2)=0 .

Express sintheta+sin3theta and sin5theta+sin7theta in product form

Express cos40^@ cos80^@ in sum form

Convert sin5A+sinA into product form and show that sin5A=5sinA-20sin^3A +16sin^5A

Consider the trigonometric expression sin (2A)/(1-cos 2A) and sin(2A)/(1+cos 2A) . Of the above expressions which one is tan A and which one is cot A?

cosecA=1/sinA and cotA=cosA/sinA prove cosecA-cotA=tan(A/2)

Prove that (sin x+sin 3 x)/(cos x+cos 3 x)=tan 2 x