Question

Find the value oftan (-120°)​

Answer 1

Answer:

Tan120°=tan(90°+30°)

So tan(90°+30°)= cot30°

Cot30°= √3

Since tan 120° is in second quadrant so it is negative. Therefore tan120°=-√3

Second Method

Tan 120°= tan(180°-60°)

Step-by-step explanation:

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