Find the exact value of the indicated trigonometric function of ?.cos ? = 
, 
< ? < 2?Find cot ?.
A. - 
B. 
C. - 
D. - 
Answer: A
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 1; local maximum at x = -1; concave down on (-?, ?) B. Local minimum at x = 1; local maximum at x = -1; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 1; local maximum at x = -1; concave up on (0, ?); concave down on (-?, 0) D. Local minimum at x = 1; local maximum at x = -1; concave up on (-?, ?)
Simplify the complex fraction.
A. 24y(y + 2)
B. 
C. 
D. 
Find all cube roots of the complex number. Leave answers in trigonometric form.-125i
A. 5 cis 90°, 5 cis °210, 5 cis 330° B. 5 cis 30°, 5 cis °60, 5 cis 90° C. 5 cis 90°, 5 cis °180, 5 cis 270° D. 5 cis °210, , 5 cis 270°, 5 cis 330°
Decide whether the following is a statement or is not a statement.9 + 6 = 16
A. Not a statement B. Statement