Question 118

$$\tan 480^\circ =$$

Solution

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Tan(480) =Tan(360+120) = Tan 120     $$\because$$ tan(360 + $$\theta$$) = tan$$\theta$$

Tan120 = Tan(90+30) = -Cot 30

Tan30 = 1/√3, so, Cot 30 = √3

So, Tan (480) = - cot 30 = -√3     Answer 

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