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Mathematics 11 Online
OpenStudy (anonymous):

An airplane flies west at 150m/s at an altitude of 1000m. A searchlight on the ground in the same veritcal plane must be kept on the airplane. what is the rate of revolution of the searchlight when the airplane is 500m due east of the searchlight?? (ps the answer is 3/25 but i keep getting 3/50...)

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