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If P1,P2,P3 be the altitudes of a triang...

If `P_1,P_2,P_3` be the altitudes of a triangle from the vertices A,B,C Respectively and `Delta` be the area the triangle, then prove that `1/P_1^2+1/P_2^2+1/P_3^3=(cotA+cotB+cotC)/Delta`.

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PATHFINDER-SOLUTION OF TRIANGLE AND HEIGHT AND DISTANCE-QUESTION BANK
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  8. AD is a median of the DeltaABC.If AE and AFare medians of the triangle...

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  9. In a triangle DeltaXYZ, let a,b and c be the lengths of the sides opp...

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  10. In a triangle DeltaXYZ, let a, b, and c be the length of the sides opp...

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  12. If in a triangle DeltaABC,a^2cos^2A-b^2-c^2=0, then

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  13. In a triangle ABC,angleC=90^@, r and R are the inradius and circumra...

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  16. In a DeltaABC, a,b,c are the sides of the triangle opposite to the ang...

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  17. Let PQR be a triangle of area Delta with a=2,b=7/2 and c=5/2, where a,...

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  18. Let p,q,r be the sides opposite to the angles P,Q,R respectively in a ...

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