tan(-55/6)的值为?

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tan(-55/6)的值为?
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tan(-55/6)的值为?
tan(-55/6)的值为?

tan(-55/6)的值为?
你是想问tan(-5π/6)吧
tan(-5π/6)
= tan(-5π/6+π)
= tan(π/6)
=3分之根号3
也许你是想求 tan(-55π/6)
tan(-55π/6)
= tan(-5π/6+9π)
= tan(-π/6)
=- tan(π/6)
=-3分之根号3

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