Solve the problem.Find a formula for the viewing area of a television screen in terms of its diagonal d and the angle ? shown in the figure. Write the formula using a single trigonometric function. Use the formula to find the viewing area for a 34-in.-diagonal television for which 
Round to the nearest tenth. 
A. A = d2 cos(2?); 236.4 in.2
B. A = d2 sin(2?); 1,131.6 in.2
C. A = 
sin(2?); 565.8 in.2
D. A = 
cos(2?); 118.2 in.2
Answer: C
Mathematics
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Solve the problem.The stream of water from a fire hose follows a parabolic curve and reaches a maximum height of 65 ft at a horizontal distance of 100 ft from the nozzle. Find the equation that represents the stream, with the origin at the nozzle.
A. y = - 
x2 + 
x
B. y = - 
x2 + 
x
C. y = - 
x2 + 
x
D. y = - 
x2 + 
x
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Find the magnitude of the vector.
= 
A. 
B. - 6
C. -
D. 122
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Go through the Babylonian algorithm two times to approximate the given square root. Give four decimal places in your answer.
A. 9.0572 B. 9.0603 C. 9.0561 D. 9.0554
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Solve the inequality.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics