展开 72((7pi)/6+1/4)

解答

展开

72 (\frac{7 π}{6} + \frac{1}{4})

84 π + 18

十进制

281.89378 \dots

求解步骤

72 (\frac{7 π}{6} + \frac{1}{4})

使用分配律:

a (b + c) = ab + a c

a = 72, b = \frac{7 π}{6}, c = \frac{1}{4}

= 72 \cdot \frac{7 π}{6} + 72 \cdot \frac{1}{4}

化简

72 \cdot \frac{7 π}{6} + 72 \cdot \frac{1}{4} : 84 π + 18

= 84 π + 18

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