1.An airplane pilot over the pacific sights an atoll at an angle of depression 7

Question

1.An airplane pilot over the pacific sights an atoll at an angle of depression 7°. At this time, the horizontal distance from the airplane to the atoll is 3,729 meters.
What is the height of the plane to the nearest meter?
2. To find the height of a pole, a surveyor moves 140 feet away from the base of the pole and then, with a transit 4 feet tall, measures the angle of elevation to the top of the pole to be 44°. To the nearest foot, what is the height of the pole?
3. The length of the hypotenuse of a 30° –60°–90° triangle is 18. what is the perimeter?
4. A triangle has side lengths of 6, 8, and 10. Is this a right triangle? Explain.

Explanation / Answer

tan 7= x/3729

x=457.86 m

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