Question

Please answer with proper solution in a piece of paper or don't answer at all! This isn't a game for getting points my goodness!
(i) Two equal vectors are along adjacent sides of a parallelogram and one of the diagonals is 3 times
the other. Then angle between vectors is
(a) π/3
(b) π/6
(c) 2π/3
(d) π/4
(ii) If A vector + B vector = C vector & |A vector| = |B vector| = |C vector| then angle between A & B is
(a) 45° (b) 60°
(c) 120° (d) 90°

Answer 1

Please answer with proper solution in a piece of paper or don't answer at all! This isn't a game for getting points my goodness!

(i) Two equal vectors are along adjacent sides of a parallelogram and one of the diagonals is 3 times

the other. Then angle between vectors is

(a) π/3

(b) π/6

(c) 2π/3

(d) π/4

(ii) If A vector + B vector = C vector & |A vector| = |B vector| = |C vector| then angle between A & B is

(a) 45° (b) 60°

(c) 120° (d) 90°

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