Thursday
April 17, 2014

Homework Help: Trigonometry

Posted by Paul on Monday, March 14, 2011 at 9:17pm.

Can you verify this identity?

cos(4x)cos(2x)= (1/2)[cos8x+cos2x]

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math(Please help) - 1) Verify the identity cos^4x - sin^4x = cos2x I know that ...
trigonometry - Verify that following are identities: 1. cos 3t = 4 cosł t-3 cos ...
TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...
maths - Choose the option that gives the solution of the initial-value problem ...
Mathematics - Trigonometric Identities - Prove: sin^2x - sin^4x = cos^2x - cos^...
Trig - Verify the identity. cos 4x + cos 2x = 2 - 2 sin^2(2x) - 2 sin^2 x
Trigonometry - Need help solving problems using the Trigonometric Identities: ...
Math - Prove each identity: a) 1-cos^2x=tan^2xcos^2x b) cos^2x + 2sin^2x-1 = sin...
trig - it says to verify the following identity, working only on one side: cotx+...
calc - Where do I start to prove this identity: sinx/cosx= 1-cos2x/sin2x please ...

Search
Members