Question 878511: Simplify.
2 - 2sin squared theta
Answer by erica65404(394)   (Show Source):
You can put this solution on YOUR website! x will be used as a placeholder of theta because I don't want to write theta ten times.
2 - 2sin^2 x
The 2 can be withdrawn.
2(1 - sin^2 x)
Remember the identity: sin^2 x + cos^2 x = 1
This can be solved for cos^2 x by subtracting sin^2 x which will give you cos^2 x = 1 - sin^2 x.
Now if we look at the original problem, we see 1 - sin^2 x which can be replaced with cos^2 x since the identity makes them equal.
2cos^2 x
This is the simplified version.
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