Answer:
Explanation:
we know the formula,
sin^2(0) + cos^2(0) = 1
=> cos^2(0) = 1 - sin^2(0)
=> cos^2(0) = 1 - (3/8)^2
=> cos^2(0) = 1 - 9/16
=> cos^2(0) = 7/16
=> cos(0) = square root of 7/16
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