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Difficult maths problem

Note by Avinav Gupta
4 years, 4 months ago

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There is a triangle ABC. Let O and H be its orthocentre and circumcentre respectively. Its given that AH=AO. Prove that angle BAC is 60° · 4 years, 4 months ago

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Picture of triangle please · 4 years, 4 months ago

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let equation of BC of a triangle ABC be 2x+3y-1 = 0 and coordinates of incentre and circumcentre of ABC are (2,1) and (-1,3) respectively then the value of cosC+cosB = ?? · 4 years, 4 months ago

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