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Unit 6 Review

Last updated about 3 years ago

37 Nsɛmmisa

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32.

A ladder has a safety warning that says that the ladder is safe as long as the angle it makes with the ground does not exceed 70^o when it is leaned against a wall. If the ladder is 20 feet, how far can it reach vertically when leaned against a wall? Round to the nearest tenth.

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33.

An air traffic controller at an airport sights a plane at an angle of elevation of 28^o. The pilot reports that the plane's altitude is 4500 feet. Find the horizontal distance from the control tower to the plane. Round to the nearest tenth.

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1.

What is sine of alpha?

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2.

What is cosine of alpha?

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3.

What is tangent of alpha?

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4.

What is sine of beta?

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5.

What is cosine of beta?

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6.

What is tangent of beta?

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7.

What is sine of 10 degrees. Round to the nearest hundredth.

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8.

What is sine of 20 degrees. Round to the nearest hundredth.

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9.

What is sine of 30 degrees. Round to the nearest hundredth.

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10.

What is sine of 60 degrees. Round to the nearest hundredth.

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11.

What is sine of 70 degrees. Round to the nearest hundredth.

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12.

What is sine of 80 degrees. Round to the nearest hundredth.

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13.

What is cosine of 10 degrees. Round to the nearest hundredth.

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14.

What is cosine of 20 degrees. Round to the nearest hundredth.

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15.

What is cosine of 30 degrees. Round to the nearest hundredth.

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16.

What is cosine of 60 degrees. Round to the nearest hundredth.

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17.

What is cosine of 70 degrees. Round to the nearest hundredth.

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18.

What is cosine of 80 degrees. Round to the nearest hundredth.

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19.

For what angle would sine and cosine have the same value? (Hint: use your answers from above to help you.)

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20.

Based on the figure, select all the true equations.

A. tan(53^o) = 8/6

B. sin(53^o) = 4/5

C. tan(90^o) = 10/6

D. cos(37^o) = 4/5

E. sin(37^o) = 6/8

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21.

Which trigonometric function could be used to find the value of x?

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22.

Which trigonometric function could be used to find the value of y?

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23.

What is the value of a? Round to the nearest tenth.

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24.

What is the value of b? Round to the nearest tenth.

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25.

What is the value of c? Round to the nearest tenth.

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26.

What is the value of d? Round to the nearest tenth.

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27.

What is the value of x? Round to the nearest tenth.

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28.

What is the value of x? Round to the nearest tenth.

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29.

What is the length of TV? Round to the nearest tenth.

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30.

What is the length of TU? Round to the nearest tenth.

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31.

What is the measure of angle V? Round to the nearest tenth.

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34.

An air traffic controller at an airport sights a plane at an angle of elevation of 28^o. The pilot reports that the plane's altitude is 4500 feet. Find the actual distance from the control tower to the plane. Round to the nearest tenth.

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35.

The pilot of a helicopter sights a fire at an angle of depression of 11^o. The helicopter's altitude is 1700 feet. To the nearest foot, what is the horizontal distance from the helicopter to the fire?

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36.

A mountain pass decreases in altitude by 200 feet over 1,100 feet of actual driving distance. What is the angle of descent of the road? Round to the nearest tenth.

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37.