Wednesday

April 1, 2015

April 1, 2015

Posted by **Amirul Thaqif** on Saturday, February 2, 2013 at 10:54am.

- math -
**Steve**, Saturday, February 2, 2013 at 5:22pmonly if theta = 0 or pi

since cos^2 θ - sin^2 θ = cos2θ

**Answer this Question**

**Related Questions**

Calculus - I wanted to confirm that I solved these problems correctly (we had to...

Algebra II - Multiple Choice Which expression is NOT equivalent to 1? (theta) ...

trigonometry - can you correct the rest for me please? Express each as a ...

trigonometry - can you correct the rest for me please? Express each as a ...

trigonomtry - can you correct the rest for me please? Express each as a function...

Trig - Which expression equivalent to: cos(theta + pi/2). A)cos theta B)-cos ...

math(Trigonometry) - sin 2 theta + cos theta = 0 so, we use sin 2 theta = 2 sin ...

Algebra II - Which of the following expressions are not equal to 1? A) sin^2 ...

algebra - Can someone please help me do this problem? That would be great! ...

Optimization - min 2x+y subject to: x+y+z=1 and y^2+z^2=4 Any help would greatly...