SOLUTION: Find the exact value of the expression cos(sin^-1(square root of 5/5))

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Question 635467: Find the exact value of the expression
cos(sin^-1(square root of 5/5))
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


We want to find if where



So







Substituting back:



John

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