Find the value of $\tan (-120^{0})$

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courageTyro

Asked: November 27, 20202020-11-27T20:13:21+00:00 2020-11-27T20:13:21+00:00In: Calculus and Trigonometry

Find the value of $\tan (-120^{0})$

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Find the value of $\tan (-120^{0})$

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Sengemegz · Accepted Answer · 2020-11-28T11:39:03+00:00

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Sengemegz Moderator

2020-11-28T11:39:03+00:00Added an answer on November 28, 2020 at 11:39 am

$\tan (-120^{0})=-\tan (120^{0})$
since 120 falls in the second quadrant and tangent is negative
$\Rightarrow -(-\tan (180^{0}-120^{0}))$
using four figure table
$\therefore \tan 60^{0}=1.732$

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Find the value of $\tan (-120^{0})$