SOLUTION: cos(sin^−1(x) − tan^−1(y))

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Question 1009287: cos(sin^−1(x) − tan^−1(y))
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
cos(sin^−1(x) − tan^−1(y))
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cos(sin^-1(x))
Let sin(t) = x
Then : cos(t) = sqrt(1-sin^2(t)) = sqrt(1-x^2)
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cos(tan^-1(y))
Let tan(t) = y/1
Then : cos(t) = 1/sqrt(y^2+1)
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Ans cos(sin^−1(x) − tan^−1(y)) = [sqrt(1-x^2)-[1/sqrt(y^2+1)]]
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Cheers,
Stan H.
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