arctan(-1.53)

解答

arctan (- 1.53)

- arctan (\frac{153}{100})

十进制

- 56.83

求解步骤

arctan (- 1.53)

= arctan (- \frac{153}{100})

利用以下特性:

arctan (- x) = - arctan (x)

arctan (- \frac{153}{100}) = - arctan (\frac{153}{100})

= - arctan (\frac{153}{100})

arccos (\frac{24}{36})

\frac{10 \cdot 10 \cdot sin ( 6 8 ^{\circ} )}{2}

- sec (\frac{π}{2})

sin (16 5^{\circ}) sin (1 5^{\circ})

\frac{1 + cos ( 21 0 ^{\circ} )}{2}