An airplane flies at an altitude of y = 5 miles toward a point directly over an observer (see figure). The speed of the plane is 700 miles per hour. Find the rates (in radians per hour) at which the angle of elevation ? is changing when the angle is  ? = 45°,   ? = 60°,  and  ? = 70°.

Q: cos(-1305°).

A: We will find the trigonometric angle.

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Q: Plot the point where 0 = -255°

A: See the attachmentExplanation:

Q: 10 feet

A: Cosx=base/hypotenuse

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A:

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