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受欢迎的三角函数 >

(tan(a))/2 = 2/11

解答

\frac{tan ( a )}{2} = \frac{2}{11}

解答

a = 0.34877 \dots + πn

+1

度数

a = 19.98310 \dots^{\circ} + 18 0^{\circ} n

求解步骤

\frac{tan ( a )}{2} = \frac{2}{11}

在两边乘以

2

\frac{tan ( a )}{2} = \frac{2}{11}

在两边乘以

2

\frac{2 tan ( a )}{2} = \frac{2 \cdot 2}{11}

化简

\frac{2 tan ( a )}{2} = \frac{2 \cdot 2}{11}

化简

\frac{2 tan ( a )}{2} : tan (a)

\frac{2 tan ( a )}{2}

数字相除:

\frac{2}{2} = 1

= tan (a)

化简

\frac{2 \cdot 2}{11} : \frac{4}{11}

\frac{2 \cdot 2}{11}

数字相乘:

2 \cdot 2 = 4

= \frac{4}{11}

tan (a) = \frac{4}{11}

tan (a) = \frac{4}{11}

tan (a) = \frac{4}{11}

使用反三角函数性质

tan (a) = \frac{4}{11}

tan (a) = \frac{4}{11}

的通解

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

a = arctan (\frac{4}{11}) + πn

a = arctan (\frac{4}{11}) + πn

以小数形式表示解

a = 0.34877 \dots + πn

作图

流行的例子

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