SOLUTION: How do you evaluate 3 sin^4 90° + 4cos^3 180° ?
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Question 1108657
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How do you evaluate 3 sin^4 90° + 4cos^3 180° ?
Answer by
ikleyn(52832)
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sin(90°) = 1. cos(180°) = -1. Therefore, 3*sin^4(90°) + 4*cos^3(180°) =
= 3*1 + 4*(-1) = 3 - 4 = -1.