if |r1| and |r2| are the position vectors (both lies in x and y plane) making and angle 45° and 75° with +ve axis measured counter clockwise estimate thier cross product |r1| =10cm and |r2|=16cm
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Explanation:
a)The scalar (dot) product is
(4.50)(7.30)cos(320
0
–85.0
0
)=–18.8.u
(b) The vector (cross) product is in the
k
^
direction (by the right-hand rule) with magnitude
∣(4.50)(7.30)sin(320
0
–85.0
0
)∣=26.9.
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