Solve the problem.A painting 1 meter high and 3 meters from the floor will cut off an angle ? to an observer, where 
assuming that the observer is x feet from the wall where the painting is displayed and that the eyes of the observer are 1.8 meters above the ground (see the figure). Find the value of ? for 
Round to the nearest tenth of a degree. 
A. 27.8°
B. 19.0°
C. 21.5°
D. 16.5°
Answer: B
Mathematics
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Find the values of x for which the geometric series converges.
A. |x| < 14
B. |x| < 
C. |x| < 1
D. |x| < 7
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Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal.cos 5x + cos 12x = 2 cos 7x cos x
A. 2?
B. -2?
C. 
D. 0
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Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one
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Multiply.6 ? 6
A. 36 B. 30 C. 12 D. 42
Mathematics