Hello, Stylis10!
Given: . , .find in terms of
i have managed to get: . . . . . Good!
where do i go from here?
We are given: .
So is an angle in a right triangle with: .
. . From Pythagorus, we have: .
Hence: .
Substitute into your equation: .
Therefore: .
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For the fun of it, I did it another way.
. . (I've got to get a life!)
We have: .
. . .
Then: .
. . . . .
Therefore: . ta-DAA!