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Tan(180°+30)_2tan(180°_30)​
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Tan(180°+30)_2tan(180°_30)​

User Rich Oliver
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Answer:


\tan(180 \degree + 30\degree) - 2 \tan(180\degree - 30\degree) \\ = ( \sin(210\degree) )/( \cos(210\degree) ) - 2 ( \sin(150\degree) )/( \cos(150\degree) ) \\ = ( - 0.5)/( - ( √(3) )/(2) ) - 2 (0.5)/( - ( √(3) )/(2) ) \\ = (0.5 + 1)/( ( √(3) )/(2) ) \\ = 0.693 \\ = ln(2)

User MDave
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