2/(tan(25))

解答

\frac{2}{tan ( 2 5 ^{\circ} )}

4.28901 \dots

求解步骤

\frac{2}{tan ( 2 5 ^{\circ} )}

整理为小数形式

= 4.28901 \dots

\frac{cos ^{2} ( 0 )}{2}

arcsin (\frac{3 \cdot 0.54 \cdot 1 0 ^{- 6}}{\frac{1}{200000}})

\frac{sec ( 3 7 ^{\circ} ) + tan ( 3 7 ^{\circ} )}{sec ( 1 6 ^{\circ} ) + tan ( 1 6 ^{\circ} )}

- sin (- \frac{5 π}{3})

arctan (- 2.36)