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1. |
Find the value of x. Round to the nearest tenth. |
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A. |
2.1 |
B. |
78.8 |
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C. |
20.3 |
D. |
131.6 |
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Hint |
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2. |
Find the value of n to the nearest degree. |
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 |
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A. |
37° |
B. |
90° |
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C. |
45° |
D. |
53° |
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Hint |
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3. |
Find the exact value of sin  , cos , and tan if the terminal side of in standard position contains the point (5, 12). |
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A. |
sin  , cos  , tan  |
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B. |
sin , cos , tan |
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C. |
sin , cos , tan |
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D. |
sin , cos , tan |
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Hint |
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4. |
Select the graph of  . |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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5. |
Find the value of sin 87° to the nearest thousandth. |
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A. |
-0.822 |
B. |
0.999 |
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C. |
0.052 |
D. |
19.08 |
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Hint |
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6. |
In baseball, a pop fly should be easily caught if it stays in the air for 7 seconds. Suppose a ball that is hit can be represented by the function y = –16t2 + 125t + 5, where y is the height after t seconds. Will the ball be considered an easy catch? |
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A. |
no, because t < 7 |
B. |
no, because t > 7 |
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C. |
yes, because t > 7 |
D. |
yes, because t < 7 |
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Hint |
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7. |
A long ramp that leads to a building entrance is 45 feet. The stairs to the entrance have a vertical height of 6 feet. What is the angle of incline of the ramp? |
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A. |
about 18° |
B. |
about 10° |
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C. |
about 8° |
D. |
about 4° |
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Hint |
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8. |
What is the reference angle of 240°? |
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A. |
120° |
B. |
60° |
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C. |
–60° |
D. |
–120° |
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Hint |
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9. |
Find sin 240° by drawing a reference angle. |
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A. |
 |
B. |
 |
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C. |
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D. |
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Hint |
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10. |
What is the period for the graph  |
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A. |
90° |
B. |
360° |
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C. |
60° |
D. |
45° |
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Hint |
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