Question

find the angle between p and q vectors​

Answer 1

Answer:

bro, where are the vectors

btw, cos(theta)= p.q/|p| |q|

Answer 2

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If ¯+¯=¯−¯

Then |¯+¯|=|¯−¯|

And we can square both the sides to get

|¯+¯|²=|¯−¯|²

We know |¯+¯|²=²+²+2θ where θ is the shortest angle between ¯ and ¯

Using this result,

²+²+2θ=²+²−2θ

The expression is true iff

θ = 0

Or θ = π/2