Refer to the figure in which O is the center of the circle, 
is a tangent, m?PCE = 20° m?Boc = 80°, PE = 10 ft, PD = 12 ft, ER= 4 ft, and BR= 5 ft.
If AQ = 12 ft, find AO
6 ft
Mathematics
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Evaluate the derivative.f(x) = 5 tanh-1(cos x)
A. - 
B. - 
C. ln
sin x
D. - 
Mathematics
Solve the problem.A region in the first quadrant is bounded above by the curve y = cosh x, below by the curve 
on the left by the y-axis, and on the right by the line 
Find the volume of the solid generated by revolving the region about the x-axis.
A. 12?
B. 2?
C. 0
D. 
Mathematics
Simplify the complex rational expression.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Which of the following investments would not be considered a primary asset class?
A. precious metals B. stock swaps C. cash D. real estate
Mathematics