50*t*cos(theta)=100, 50*t*sin(theta) - 1/2*9.8*t^2=20, 0<theta<pi/2, w=180*theta/pi50*t*cos(theta)=100, 50*t*sin(theta) - 1/2*9.8*t^2=20, 0<theta<pi/2, w=180*theta/pi

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