Solve the equation.Solve cos ? = 
for ?, where 0° ? ? ? 90°.
A. 45°
B. 30°
C. 90°
D. 60°
Answer: A
Mathematics
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Graph the function.Graph the function f(x) = sin 4x + cos 2x.
A. 
B. 
C. 
D. 
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Solve the problem.If (8, -4) is the endpoint of a line segment, and (12, -5) is its midpoint, find the other endpoint.
A. (16, -6) B. (6, 4) C. (16, -3) D. (0, -2)
Mathematics
Factor by grouping.x3 + 8x2 + 5x + 40
A. (x2 + 5)(x - 8) B. (x2 + 5)(x + 8x) C. (x3 + 5)(x + 8) D. (x2 + 5)(x + 8)
Mathematics
Find the trigonometric function value of angle ?.sec ? = 
and ? in quadrant IVFind tan ?.
A. - 
B. - 
C. - 
D. - 
Mathematics