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

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

A 0^o < x < 90^o
B 90^o < x <180^o
C 180^o < x < 270^o
D 270^o < x <360^o
E -90^o < x <90^o

waec 1998 mathematics

The correct answer is C. 180^o < x < 270^o

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

The 3rd quadrant = 180Â° < x < 270Â°

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