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受欢迎的三角函数 >

cos(x)= 1/6

解答

cos (x) = \frac{1}{6}

解答

x = 1.40334 \dots + 2 πn, x = 2 π - 1.40334 \dots + 2 πn

+1

度数

x = 80.40593 \dots^{\circ} + 36 0^{\circ} n, x = 279.59406 \dots^{\circ} + 36 0^{\circ} n

求解步骤

cos (x) = \frac{1}{6}

使用反三角函数性质

cos (x) = \frac{1}{6}

cos (x) = \frac{1}{6}

的通解

cos (x) = a \Rightarrow x = arccos (a) + 2 πn, x = 2 π - arccos (a) + 2 πn

x = arccos (\frac{1}{6}) + 2 πn, x = 2 π - arccos (\frac{1}{6}) + 2 πn

x = arccos (\frac{1}{6}) + 2 πn, x = 2 π - arccos (\frac{1}{6}) + 2 πn

以小数形式表示解

x = 1.40334 \dots + 2 πn, x = 2 π - 1.40334 \dots + 2 πn

作图

流行的例子

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