If the join of (x 1 ,y 1 )& (x 2 ,y 2 ) makes an obtuse angle at (x 3 ,y 3 ) then prove that (x 3 -x 1 )(x 3 -x 2 )+ (y 3 -y 1 )(y 3 -y 2 )

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Arun · Answer

Dear Ashutosh You have forgotten the RHS of the part which is to be proved. Please check and repost it. You can also attach an image. I will be happy to help you.

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If the join of (x 1 ,y 1 )& (x 2 ,y 2 ) makes an obtuse angle at (x 3 ,y 3 ) then prove that (x 3 -x 1 )(x 3 -x 2 )+ (y 3 -y 1 )(y 3 -y 2 )

If the join of (x₁,y₁)& (x₂,y₂) makes an obtuse angle at (x₃,y₃) then prove that (x₃-x₁)(x₃-x₂)+ (y₃-y₁)(y₃-y₂)

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If the join of (x 1 ,y 1 )& (x 2 ,y 2 ) makes an obtuse angle at (x 3 ,y 3 ) then prove that (x 3 -x 1 )(x 3 -x 2 )+ (y 3 -y 1 )(y 3 -y 2 )

If the join of (x1,y1)& (x2,y2) makes an obtuse angle at (x3,y3) then prove that (x3-x1)(x3-x2)+ (y3-y1)(y3-y2)

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If the join of (x₁,y₁)& (x₂,y₂) makes an obtuse angle at (x₃,y₃) then prove that (x₃-x₁)(x₃-x₂)+ (y₃-y₁)(y₃-y₂)