Trig. Identities

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February 14th 2011, 08:06 PM
jonnygill

Trig. Identities

Hello!

How do I solve the following equation...

$2\cos^2\Theta=2+\sin^2\Theta$

First time using latex.
February 14th 2011, 08:08 PM
dwsmith

Quote:

Originally Posted by jonnygill

Hello!

How do I solve the following equation...

$2\cos^2\Theta=2+\sin^2\Theta$

First time using latex.

Wasn't paying attention with my help.
February 14th 2011, 08:18 PM
pickslides

Quote:

Originally Posted by jonnygill

How do I solve the following equation...

$2\cos^2\Theta=2+\sin^2\Theta$

By inspection $\displaystyle\Theta =0$ is a solution, or make $\displaystyle \cos^2\Theta = 1-\sin^2\Theta$ to solve it in terms of $\displaystyle\sin\Theta$

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