Cos x is negative and sin x is negative Which o...

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Cos x is negative and sin x is negative.Which of the following is true of x?

index-0

0^o < x < 90^o

index-1

90^o < x <180^o

index-2

180^o < x < 270^o

index-3

270^o < x <360^o

Correct Answer: C

In the 3rd quadrant, only the tan of angles are positive.

The 3rd quadrant = 180° < x < 270°