Friday
November 28, 2014

Homework Help: MATH ANALYSIS

Posted by anonymous on Tuesday, May 25, 2010 at 1:02am.

How do you simplify these questions?:
1. cos^2(x/2)-sin^2(x/2)

2. 2cos^2(3A)-1

3. sin 2x/1+cos2x

I think number 3 is tan 2x?

The other two I dont know.
Thanks for the help

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Trig....... - I need to prove that the following is true. Thanks (2tanx /1-tan^x...
Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...
Trig - Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...
precalculus - For each of the following determine whether or not it is an ...
TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...
algebra - Can someone please help me do this problem? That would be great! ...
tigonometry - expres the following as sums and differences of sines or cosines ...
MathsSs triG - Consider sin(x-360)sin(90-x)tan(-x)/cos(90+x) 1.A.SIMPLIFY sin(x-...
Trigonometry desperate help, clueless girl here - 2. solve cos 2x-3sin x cos 2x...
trig 26 - simplify to a constant or trig func. 1. sec Ču-tan Ču/cos Čv+sin Čv ...

Search
Members