逆三角関数の公式(ASIN,ACOS,ATAN)

逆三角関数

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\[ \sin^{-1} \frac{b}{c} = \theta \ \ \ \ \ \cos^{-1} \frac{a}{c} = \theta \ \ \ \ \ \tan^{-1} \frac{b}{a} = \theta \] \[ \csc^{-1} \frac{c}{b} = \theta \ \ \ \ \ \sec^{-1} \frac{c}{a} = \theta \ \ \ \ \ \cot^{-1} \frac{a}{b} = \theta \]

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EXCELの数式

	A	B
1	辺(a)	8
2	辺(b)	15
3	辺(c)	17
4	角度(θ)	=DEGREES((ACOS(B1/B3)))
5	角度(θ)	=DEGREES((ASIN(B2/B3)))
6	角度(θ)	=DEGREES((ATAN(B2/B1)))

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