SOLUTION: Solve sin^4θ - cos^4θ

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Question 1115369: Solve sin^4θ - cos^4θ
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


What do you mean "solve"?

There is no equation; there is nothing to solve.

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Again, "simplify" is not specific. In this example, there is an easy first step to simplify the expression; then there is another less trivial way to simplify the expression further. But we don't know where we are supposed to stop in the simplification process....

sin%28x%29%5E4-cos%28x%29%5E4%29
%28sin%28x%29%5E2%2Bcos%28x%29%5E2%29%2A%28sin%28x%29%5E2-cos%28x%29%5E2%29
%281%29%28sin%28x%29%5E2-cos%28x%29%5E2%29
%28sin%28x%29%5E2-cos%28x%29%5E2%29

The original expression has been simplified; but it can be simplified further. Do you see how?