Cos x is negative and sin x is negative.Which of the following is true of x?
A
0o o
B
90o o
C
180o o
D
270o o
E
-90o o
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
In the 3rd quadrant, only the tan of angles are positive.
The 3rd quadrant = 180^\circ < x < 270^\circ
Source: Myschool Past Questions Archive (Record #22096)