Simplify the expression.
A. cot2 ?
B. sin2 ?
C. cos2 ?
D. csc ?
Answer: C
Mathematics
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Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = cos x + 4, [0, 2?], midpoint
A. 
B. 
C. 
D. 
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Determine if the given polar coordinates represent the same point.(2, ?/6), (-2, 7?/6)
A. No B. Yes
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 3-2? 34
A. 
B. 6
C. -729
D. 9
Mathematics
Provide an appropriate response.Determine the measure of the acute angle ? for which cos ? = 
.
A. 30° 
B. 45° 
C. 90° 
D. 60° 
Mathematics