X- direction
Newton's second law
Sx=ut+21at2a=0Sx=ut75=37(cosθ)t
Y-direction
Sy=uyt+21at2
Sy=0,a=−g,uy=usinθ=37sinθ 0=37(sinθ)t+21(−9.8)t2
0=(37sinθ)+21(−9.8)tt=709.81sinθ
75=37cosθ×(709.81×sinθ)75=24509.8sinθcosθ
sin2θ=2sinθcosθ
75=13131.4851sin2θ
θ=16.5°
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