Question

Two vectors P and Q are inclined at angle ∆with
each other. If |P| = a and |QI = 2a,THEN |2P+ Ql=
(1) 2a cos∆÷2
(2) 2a sin∆÷2

(3) 4a sin∆÷2
(4) 4a cos∆÷2
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Answer 1

Answer:

option 4 is your answer.thank you