Solve the problem.It can be shown that if the angle of elevation from an observer to the top of an object is A and the angle of elevation d ft closer is B, then the height of the object is given by h = 
ft.Find A if 
and 
Give your answer in degrees to the nearest hundredth.
A. 51.51°
B. 55.72°
C. 46.34°
D. 39.97°
Answer: C
Mathematics
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Evaluate the integral by using a substitution prior to integration by parts.
A. -1.33 B. -2.27 C. 0.39 D. -0.94
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Find all solutions of the equation in the interval [0, 2?).csc 3x = 0
A. 
B. ?
C. 
D. 
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Find an equation of a parabola that satisfies the given conditions.Focus (-10, -2), directrix y = -10
A. (y + 2)2 = 16(x + 10) B. (x + 2)2 = 16(y + 6) C. (x + 10)2 = 16(y + 2) D. (x + 10)2 = 16(y + 6)
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Perform the indicated operation and simplify.
÷ 
A. 
B. 
C. 
D. 
Mathematics