3/(sin(40))

解答

\frac{3}{sin ( 4 0 ^{\circ} )}

4.66717 \dots

求解步骤

\frac{3}{sin ( 4 0 ^{\circ} )}

整理为小数形式

= 4.66717 \dots

32 sin (3 5^{\circ})

50 \cdot 3 \cdot cos (3 0^{\circ})

(3 sin (3 6^{\circ}) + 4 cos (5 4^{\circ})) csc (3 6^{\circ})

4 0^{2} + 6 0^{2} - 2 (40) (60) cos (15 5^{\circ})

ln (cos (\frac{π}{6}))