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`        If O be the circumcentre and O` be the orthocentre of a triangle ABC then OA+OB+OC=`
7 years ago

147 Points
```										Dear pallaviwe know that O'G =2GO  where G is the centroid of trianglelet a point D between B and CSo, OD =(OB+OC )/2now OA + OB + OC = OA + 2ODwe know that G devide the point A and mib point of apposite side(D) in ratiio  2:1So, OG =(OA 2OD)/(2+1)So, OA + OB + OC =3OG=2OG + OG=GO'+OG =OO'Please feel free to post as many doubts on our discussion forum as you can.If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly.We are all IITians and here to help you in your IIT JEE  & AIEEE preparation.All the best.Regards,Askiitians ExpertsBadiuddin
```
7 years ago
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