Question

If | P×Q |= PQ sinθ = PQ then P & Q are​

Answer 1

Given :  | P×Q |= PQ sinθ = PQ  

To Find : How P & Q are wrt to each other

Solution:

Cross product of vector = |P||Q|Sinθ

Dot product of vector = |P||Q|Cosθ

 | P×Q |= PQ sinθ = PQ  

PQ sinθ = PQ  

=> sinθ = 1

=> θ = 90°

Hence Vector P & Q are perpendicular Each other

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