Wednesday
July 23, 2014

Homework Help: Trigonometry

Posted by Kewal on Friday, December 30, 2011 at 4:52am.

Prove that
sin(n+1)Asin(n-1)A + cos(n+1)Acos(n-1)A = cos2A

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Trigonometry - Prove that sin(n+1)Asin(n+2)A + cos(n+1)Acos(n+2)A = cosA
Math/Calculus - Please check my work and correct any errors/point out any errors...
Trigonometry desperate help, clueless girl here - 2. solve cos 2x-3sin x cos 2x...
tigonometry - expres the following as sums and differences of sines or cosines ...
Trigonometry - 1.Solve tan^2x + tan x 1 = 0 for the principal value(s) to two ...
Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...
trigonometry hlp me - 6.Prove that tan y cos^2 y + sin^2y/sin y = cos y + sin y...
trig - Show that 1-cos2A/Cos^2*A = tan^2*A 1-cos2A/Cos^2*A = [Cos^2(A) - Cos(2A...
Math - Calculus - The identity below is significant because it relates 3 ...
Trigonometry - Prove the identity sin(x+y+z)+sin(x+y-z)+sin(x-y+z)+ sin(x-y-z...

Search
Members