tan(α)=-(sqrt(7))/2

解答

tan (α) = - \frac{7}{2}

α = - 0.92351 \dots + πn

度数

α = - 52.91331 \dots^{\circ} + 18 0^{\circ} n

求解步骤

tan (α) = - \frac{7}{2}

使用反三角函数性质

tan (α) = - \frac{7}{2}

tan (α) = - \frac{7}{2}

的通解

tan (x) = - a \Rightarrow x = arctan (- a) + πn

α = arctan (- \frac{7}{2}) + πn

α = arctan (- \frac{7}{2}) + πn

以小数形式表示解

α = - 0.92351 \dots + πn

- sin (θ) - cos (2 θ) = 0

6 cos^{2} (x) + cos (x) = 1, 0^{\circ} \leq x \leq 36 0^{\circ}

tan (y) = \frac{π}{4}

2 sin (x - 1) + 1 = 0

- 6 sin^{2} (x) + sin (x) = - 3