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Grade: 11
        
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)
10 months ago

Answers : (1)

Arun
20280 Points
							
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.
10 months ago
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