Question 17
Multiple Choice
Use the definitions (not a calculator) to evaluate the six trigonometric functions of the given angle: 23π
A) cos23π=0 , sin23π=−1 , tan23π is undefined, sec23π is undefined, cot23π=0 , csc23π=−1 .
B) cos23π=−1 , sin23π=1 , tan23π=0 , sec23π=−1 , cot23π is undefined, csc23π is undefined.
C) cos23π=1 , sin23π=1 , tan23π is undefined, sec23π is undefined, cot23π=0 , csc23π=−1 .
D) cos23π=−21 , sin23π=23 , tan23π=0 , sec23π=−1 , cot23π is undefined, csc23π is undefined.
E) cos23π=−21 , sin23π=23 , tan23π is undefined, sec23π is undefined, cot23π=0 , csc23π=−1 .
Correct Answer:

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