Assignment 4-A Begin Date: 2/14/2018 2:00:00 PM -- Due Date: 2/19/2018 11:59:00
ID: 1873958 • Letter: A
Question
Assignment 4-A Begin Date: 2/14/2018 2:00:00 PM -- Due Date: 2/19/2018 11:59:00 PM End Date: 3/5/2018 11:59:00 PM (10%) Problem 8: A jet flies towards a ground-based radar dish. Radar locates the jet at a distance D = 39 km from the dish, at an angle = 41° above horizontal. ©theexpertta.com * 33% Part (a) What is the jet's horizontal distance. DH1n meters from the radar dish? Grade Summary Deductions Potential Late Work % 100% Late Potential 100% 0% 100% 7 8 9 sin0 cotan0asin acos0 atan0 acotan sinhO cosh0 tanh cotanh0 cos) tan Submissions Attempts i (090 per attempt) detailed view *12 3 END Degrees Radians NO 0% 0% Submit Hint Feedbac!k I give up! Hints: 090 deduction per hint. Hints remaining: Feedback: 0% deduction per feedback. 33% Part (b) What is the jet's vertical distance, Drin meters, above the radar dish? - 33% Part (c) Write an expression for the distance vector, D, in rectangular form in terms of D and in a coordinate system with the dish at the origin and the unit vectors i and j in the horizontal and vertical directions. (to the right and up)Explanation / Answer
According to the given problem,
Using vector resolution,
a)Jet plane's horizontal distance,
Dcos = 39cos41o = 29.43 kM = 2.94*104m.
b)Jet plane's vertical distance,
Dsin = 39sin41o = 25.6 KM = 2.56*104m
(c)Expression would be,
D[cos i + sin j].
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