Find the distance between the points A(Cos x, Sin x) and B(Sin x, -Cos x).
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Step-by-step explanation:
A(Cos x, Sin x) and B(Sin x, -Cos x).
So AB²=(cos x-sinx)²+(sin x+cosx)²
=cos ²x+sin²x-2sinxcosx+sin²x+2sinxcosx+cos ²x
=2(cos ²x+sin²x)
=2*1=2
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