Question:
If A and B are two vectors of a parallelogram annd its area is AB/2 then angle between them is
Answer:
The area of a parallelogram whose two adjacent sides are given as A and B = Cross product of those two sides A and B
A×B = AB sinθ
and given area of parallelogram = AB/2
So, AB sinθ = AB/2
= sinθ = 1/2
So, θ = sin-1(1/2)
= sin 30º
So, the angle between them is 30º
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