tan(x)=-1/10

解答

tan (x) = - \frac{1}{10}

x = - 0.09966 \dots + πn

度数

x = - 5.71059 \dots^{\circ} + 18 0^{\circ} n

求解步骤

tan (x) = - \frac{1}{10}

使用反三角函数性质

tan (x) = - \frac{1}{10}

tan (x) = - \frac{1}{10}

的通解

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

x = arctan (- \frac{1}{10}) + πn

x = arctan (- \frac{1}{10}) + πn

以小数形式表示解

x = - 0.09966 \dots + πn

tan (4 x) \cdot cot (x + 60) = 1

sin^{2} (A) + cos^{2} (A) + sin (A) - 2 = 0

2 - 2 cos (x) = - 6 cos (x)

2 sin^{2} (u) = 1 + sin (u), 0 \leq t < 2 π

tan (3 y + 60) tan (2 y + 5) = 1