(200)/(sin(25))

解答

\frac{200}{sin ( 2 5 ^{\circ} )}

473.24031 \dots

求解步骤

\frac{200}{sin ( 2 5 ^{\circ} )}

整理为小数形式

= 473.24031 \dots

tan (\frac{1}{2} + \frac{1}{3})

(10 0^{2} + 12 0^{2} - 2 \cdot 100 \cdot 120 \cdot cos (6 0^{\circ}))

5 \cdot cos (5 3^{\circ})

arctan (\frac{4}{3})

arcsin (\frac{2}{10})