S1 = 170 m
S2 = 200 m
Rx = 170*sen 30°+200*cos 30° = 85+173,2 = 258,2 m
Ry = 170*cos 30°+200*sen 30° = 147,22+100 = 247,22 m
angolo β = arctan Ry/Rx = arctan (247,22/258,2) = 43,76°
angolo α = 90°-(β+30°)= 16,24°
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