Friday

September 19, 2014

September 19, 2014

Posted by **jenna** on Wednesday, May 16, 2012 at 9:23pm.

- trig -
**Count Iblis**, Wednesday, May 16, 2012 at 10:15pmCos^2(x) - Sin^2(x) = Cos(2 x)

So, you can write the expression as

cos(8 theta)

**Answer this Question**

**Related Questions**

Math - Find one solution for each equation. 1. cos 4theta = sin theta 2. tan ...

math - how do you get sin(4theta)/1+cos(4theta) to equal tan(2theta)

Trig Identity - Prove or disprove the following identity sin^4theta - cos^4theta...

Calculus - what is the limit of g(theta)= tan(4theta)/4theta.

TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...

trig 26 - simplify to a constant or trig func. 1. sec Ču-tan Ču/cos Čv+sin Čv ...

trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...

Trig - Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...

trigonometry HELP pleasE! - these must be written as a single trig expression, ...

Calculus - Find if there are any vertical asymptotes: g(theta)= (tan4theta)/(...