Solve the problem. Round to the nearest whole unit.The top and base of a window are respectively 11 ft and 3 ft above the level of an observer's eyes. At what distance from the wall must the observer stand in order to make the angle subtended by the window equal to the angle of elevation of its base?
A. 6 ft
B. 8 ft
C. 10 ft
D. 4 ft
Answer: D
Mathematics
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Solve the problem.Three cards are drawn in order from a well shuffled deck of 52 cards. The probability that all three cards are clubs is given by
A. 
.
B. 
.
C. 
.
D. 
.
E. none of these
Mathematics
Evaluate the expression.8 tan 0° + 3 csc 270°
A. 0 B. Undefined C. 3 D. -3
Mathematics
Use a sum or difference identity to find the exact value.
A. -2
B. - 
C. - 
D. - 
Mathematics
Solve the problem. Write your answer using scientific notation.The star epsilon Eridanus is about 
from Earth. How many light years is it from Earth to epsilon Eridanus? (Note: the speed of light is about 
A. 3.734 × 1026 B. 1.08 C. 9.26 × 10-2 D. 1.08 × 101
Mathematics