Exam 4: Trigonometric Functions of Angles

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Use a calculator to approximate the tan 41.0° to three decimal places.

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Stratosphere Tower. The Stratosphere Tower in Las Vegas dominates the city's landscape by rising 1,149 feet above the desert floor. The restaurant at the top of the tower turns slowly and completes a full revolution in one hour. How many radians will the restaurant have rotated in 18 minutes?

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Find the angular speed, Find the angular speed,      , associated with rotating a central angle θ = 12     in time t = 17 seconds. Express your answer in radians/second. , associated with rotating a central angle θ = 12 Find the angular speed,      , associated with rotating a central angle θ = 12     in time t = 17 seconds. Express your answer in radians/second. in time t = 17 seconds. Express your answer in radians/second.

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A hot air balloon is sighted at the same time by two friends who are 2.2 miles apart on the same side of the balloon. The angles of elevation from the two friends are 11.5° and 18°. How high is the balloon? Round to one decimal place.

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Find the distance, s, a point travels along a circle over time t = 15 minutes, given the angular speed Find the distance, s, a point travels along a circle over time t = 15 minutes, given the angular speed   = 9 rotations per second and the radius r = 7 inches. Express your answer in miles (1 mile = 5,280 ft), and round your answer to one decimal place. = 9 rotations per second and the radius r = 7 inches. Express your answer in miles (1 mile = 5,280 ft), and round your answer to one decimal place.

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Solve the given triangle and round to one decimal place.  Solve the given triangle and round to one decimal place.   B = 199.0 cm., c = 45.0 cm.,  \beta  = 40.0° B = 199.0 cm., c = 45.0 cm., β\beta = 40.0°

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Use a calculator to approximate the sec 51.2° to three decimal places.

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Bicycle. A bicyclist is traveling at an angular speed of Bicycle. A bicyclist is traveling at an angular speed of      radians per second. How fast is she traveling in miles per hour if her tires are 27 inches in diameter? Round your answer to one decimal place. radians per second. How fast is she traveling in miles per hour if her tires are 27 inches in diameter? Round your answer to one decimal place.

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Fruit. When a grapefruit is cut in half, wedges or sectors are visible. If the central angle of a sector is 260°, how many radians does this represent?

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Solve right triangle ABC if A = 25° and c = 19.3 yd. Round lengths to one decimal place. Solve right triangle ABC if A = 25° and c = 19.3 yd. Round lengths to one decimal place.

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Use the reciprocal identity Use the reciprocal identity      to calculate cot 45°. to calculate cot 45°.

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Evaluate cos(-855°) exactly.

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State in which quadrant or on what axis the terminal side of a 1080° angle in standard position lies.

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Find the area of the triangle described. Round to the nearest integer.  Find the area of the triangle described. Round to the nearest integer.   A = 274, b = 257,  \beta  = 29° A = 274, b = 257, β\beta = 29°

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Midair Refueling Below is an enactment of the mid-air military aircraft refueling scenario. Assume the elevation angle that the hose makes with the plane being fueled is θ = 41°. If the hose is 180 feet long, what should be the altitude difference a between the two planes? Round to the nearest foot. Midair Refueling Below is an enactment of the mid-air military aircraft refueling scenario. Assume the elevation angle that the hose makes with the plane being fueled is θ = 41°. If the hose is 180 feet long, what should be the altitude difference a between the two planes? Round to the nearest foot.

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If cos θ = If cos θ =      , and the terminal side of θ lies in quadrant IV, find csc θ. , and the terminal side of θ lies in quadrant IV, find csc θ.

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Use the trigonometric ratio identity Use the trigonometric ratio identity   To calculate tan 30°. To calculate tan 30°.

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State in which quadrant or on what axis the terminal side of a 216° angle in standard position lies.

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Glide slope of an airplane. The glide slope of an airplane is the angle between the flight path approaching the runway and the ground. An airliner approaches a runway on a glide slope of approximately 3°. How high is an airplane above the ground if the distance from the runway to a point on the ground directly below the airplane is 15,909 feet? Round your answer to the nearest whole foot. Glide slope of an airplane. The glide slope of an airplane is the angle between the flight path approaching the runway and the ground. An airliner approaches a runway on a glide slope of approximately 3°. How high is an airplane above the ground if the distance from the runway to a point on the ground directly below the airplane is 15,909 feet? Round your answer to the nearest whole foot.

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Solve the given triangle. Round angle to one decimal place and side measures to 3 significant digits. Solve the given triangle. Round angle to one decimal place and side measures to 3 significant digits.   C = 199 yd., a = 232 yd. , b = 219<sup> </sup>yd. C = 199 yd., a = 232 yd. , b = 219 yd.

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