三角関数の公式
\sin \theta = \frac{b}{c} \ \ \ \ \ \cos \theta = \frac{a}{c} \ \ \ \ \ \tan \theta = \frac{b}{a}
b = c \cdotp \sin \theta\ \ \ \ \ a = c \cdotp \cos \theta
| A | B |
1 | 辺(c) | 100 |
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2 | 角度(θ) | 60 |
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3 | 辺(a) | =B1*COS(RADIANS(B2)) |
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4 | 辺(b) | =B1*SIN(RADIANS(B2)) |
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5 | 辺(c) | =SQRT(B1^2+B2^2) |
逆三角関数
\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
| A | B |
1 | 辺(a) | 8 |
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2 | 辺(b) | 15 |
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3 | 辺(c) | 17 |
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4 | 角度(θ) | =DEGREES((ACOS(B1/B3))) |
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5 | 角度(θ) | =DEGREES((ASIN(B2/B3))) |
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6 | 角度(θ) | =DEGREES((ATAN(B2/B1))) |