Friday
March 27, 2015

Homework Help: Precalculus

Posted by Shadow on Wednesday, April 3, 2013 at 10:50pm.

Verify the identities.

Cos^2x - sin^2x = 2cos^2x - 1

When verifying identities, can I work on both side?
Ex.
1 - sin^2x - sin^2x = 1 - 2sin^2x
1 - 2sin^2x = 1 - 2sin^2x

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

verifying trigonometric identities - How do I do these problems? Verify the ...
Trig Identities - Proving identities: 1) 1+ 1/tan^2x = 1/sin^2x 2) 2sin^2 x-1 = ...
tigonometry - expres the following as sums and differences of sines or cosines ...
Math - Which expression is equivalent to sin(3x) + sin x? A) 2cos(2x)sin x B) ...
Calc - Which expression is equivalent to sin(3x) + sin x? A. 2cos(2x)sin x B. ...
Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...
Trig - Are any of these three problems identities? 1. Cos^2x-sin^2x=1-2sin^2x 2...
Trig - Are any of these three problems identities? 1. Cos^2x-sin^2x=1-2sin^2x 2...
Pre-calc/Calc - Which expression is equivalent to sin(3x) + sin x? A. 2cos(2x)...
Precal - I do not understand how to do this problem ((sin^3 A + cos^3 A)/(sin A...

Members