sin根号五等于多少度怎么算
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sin根号五等于1.2566370614359172度,可以用下面的公式计算:
sin根号五 = sin(arccos(1/5)) = 1/5 * sin(π/2 - arccos(1/5)) = 1/5 * sin(π/2 - 90° + arccos(1/5)) = 1/5 * sin(90° + arccos(1/5)) = 1/5 * sin(90° + 1.2566370614359172°) = 1.2566370614359172°
sin根号五 = sin(arccos(1/5)) = 1/5 * sin(π/2 - arccos(1/5)) = 1/5 * sin(π/2 - 90° + arccos(1/5)) = 1/5 * sin(90° + arccos(1/5)) = 1/5 * sin(90° + 1.2566370614359172°) = 1.2566370614359172°
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