If |vecP+vecQ|=|vecP|+|vecQ|. The angle between the vectors vecPandvec

1.	If \|vecP+vecQ\|=\|vecP\|+\|vecQ\|. The angle between the vectors vecPandvecQ is
Answer» <html><body><p><<a href="https://interviewquestions.tuteehub.com/tag/p-588962" style="font-weight:bold;" target="_blank" title="Click to know more about P">P</a>>`0^(@)`<br/>`180^(@)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/60-328817" style="font-weight:bold;" target="_blank" title="Click to know more about 60">60</a>^(@)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/90-341351" style="font-weight:bold;" target="_blank" title="Click to know more about 90">90</a>^(@)`<br/></p>Solution :Square on both sides and the resultant becomes<br/> `P^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)+Q^(2)+2PQcostheta=P^(2)+Q^(2)+2PQ` <br/> `costheta=1""0-0^(@)`</body></html>

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