Because the sine law would require two angles, instead of just θ as in the cosine law. If you eliminate the second angle in terms of θ in the ... ... <看更多>
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Because the sine law would require two angles, instead of just θ as in the cosine law. If you eliminate the second angle in terms of θ in the ... ... <看更多>
The argument for acos cannot be smaller than -1 or larger than 1, since that's the domain of cos . So you shouldn't use Math.toDegrees . ... <看更多>