Answer the question.The diagram below shows a rope connecting the top of a pole to the ground. The rope is 21 yd long and touches the ground 13 yd from the pole.How tall is the pole? Express the answer as a simplified radical if the radicand is not a perfect square.
A. 4
yd
B. 17 yd
C. 
yd
D. 272 yd
Answer: A
Mathematics
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Use a half-angle identity to find an exact value for the following, given the information about x. Find cos 
, given that sin x = 
and 360° < x < 450°.
A. 
B. 
C. - 
D. - 
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Solve the problem. Round to the nearest cent.Andy Jones opened a taxi service company. To pay for startup costs, Andy Jones borrowed 
from a bank at 9% for 1 year. Find the interest.
A. $261.00 B. $2610.00 C. $31,610.00 D. $2900.00
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Find the exact value by using a half-angle identity.tan 165°
A. 2 - 
B. -2 + 
C. -2 - 
D. 2 + 
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Use the compound interest formula to determine the future value of the given principal P.$3000 at 8% compounded continuously for 2 years
A. $3852.08 B. $11,381.00 C. $3520.53 D. $163,794.45
Mathematics