SOLUTION: Evaluate the expression without using a calculator. cos(sin^-1(1/2))

SOLUTION: Evaluate the expression without using a calculator. cos(sin^-1(1/2))

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Question 1203814: Evaluate the expression without using a calculator.
cos(sin^-1(1/2))
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
Evaluate the expression without using a calculator.

let

then

then use identity and substitute sin

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