A Plane Flying at an Altitude of a Miles Above $$a = 8$$

question 17

Multiple Choice

A plane flying at an altitude of a miles above a radar antenna will pass directly over the radar antenna (see figure) .Let d be the ground distance from the antenna to the point directly under the plane and let x be the angle of elevation to the plane from the antenna. $$a = 8$$ . ​
(d is positive as the plane approaches the antenna. )
Write d as a function of x.​

• A)d = 8 csc x
• B)d = 8 cot x
• C)d = 8 cos x
• D)d = 8 tan x
• E)d = 8 sin x

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