Give the magnitude and direction of vector R?

L

Lucy

New member
Three forces (and no others) act upon an object, which remains at rest. The forces are represented by the vectors P, Q and R, where

P = -7i + 4j and Q = 3i - 5j

Give the magnitude and direction of the vector R to one decimal place.

Mag is either 2.2 or 4.1

Direction is one of the following
-166.0°
-76.0°
-14.0°
14.0°
76.0°
166.0°

thanks
 
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