1.

In the figure given below, with F1 = 60j + 80k and F2= 50i -100j + 100k, what is the value of β? (β is the angle made by the resultant vector with the y-axis )

A. 76˚
B. 102˚
C. 19˚
D. 130˚
Answer» C. 19˚


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