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17. From the top of a hill, an eagle spots a mouseon the ground, making an angle of depressionof 30°. With a speed of 8 m/s, it swoops downon the mouse and catches it in 10 seconds.What is the height of the hill? |
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Answer» Answer: h=40m Step-by-step EXPLANATION: Let E and M be the POSITION of eagle and mouse respectively the angle of depresion OEM = 30° so the angle of mouse w.r.t eagle EMO=60° it covers EM in 10sec with a velocity 8m/s so, EM=8*10=80m to find height
as cos 60 = 0.5 Thus the height of the Mountain is 40m |
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