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Vo = 35 m/
g = 10 m/s^2
X = 45 m
a = ___?
X = Vo^2 sin 2a / g
45 = 35^2 sin 2a /10
450 = 1225 sin 2a
sin 2a = 450/1225
2a = 21,55°
a = 10,78°..<-- jawaban