my problem is " a gray kangroo can bound across a flat stretchof ground with each jump carrying it 11 m from the take off point. if the kangaroo leaves the ground at a 20 degree angle, what is its takeoff speed?
I believe the formula is (11*9.8)/(sin2(20)) but I do not know how to get the answer and how to put sin2(20) in my calculator
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