If , prove that | s |=| a - b |=2a 2…

PHYSICS · Subjective · CBSE · Physics · Motion in a Plane · Motion in a Plane

Problem

If ∣a∣=∣b∣=a|\mathbf{a}|=|\mathbf{b}|=a, prove that ∣s∣=∣a−b∣=2asin⁡θ2.|\mathbf{s}|=|\mathbf{a}-\mathbf{b}|=2a\sin\frac{\theta}{2}.

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