Two vectors of magnitude 4 and 5 give a resultant of magnitude 9 . What is the cross product of given vectors?

Explanation

If two vectors are represented both in magnitude and direction by the two sides of a triangle taken in the same order,then the resultant of these vectors is represented both in magnitude and direction by the third side of the triangle taken in the opposite order.
Let two vectors `vecA` and `vecB` Inclined at angle `theta`
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