What is cosine of ?
Hint
The corresponding acute angle is in the second quadrant.
Answer
What is sine of ?
The corresponding acute angle is in the fourth quadrant.
The corresponding acute angle is in the third quadrant.
The corresponding acute angle is in the first quadrant.
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?
in the second quadrant.
?
in the second quadrant.
?
in the fourth quadrant.
?
in the third quadrant.
?
in the first quadrant.