Answer to Question #177041 in Physics for Fhulufhedzani

Question #177041

Vector A has magnitude 4 units, vector B has magnitude 6 units. The angle between A and B is 60°. Calculate the magnitude of 2A + 3B.

Expert's answer

"2A=2\\cdot4=8"

"3B=3\\cdot6=18"

"2A+3B=\\sqrt{8^2+18^2+2\\cdot8\\cdot18\\cdot\\cos60\u00b0}=23.065" . Answer

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