In a Delta A B C , prove that: (b^2-c^2...

In a ` Delta A B C ,` prove that: `(b^2-c^2)cotA+(c^2-a^2)cot B+(a^2-b^2)cotC=0`

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In any /_\ A B C , prove that (b^2-c^2)cotA+(c^2-a^2)cotB+(c^a-b^2)cotC=0

In any DeltaABC , prove that (b^(2)-c^(2))cotA+(c^(2)-a^(2))cotB+(a^(2)-b^(2))cotC=0

For any triangle ABC, prove that (b^2 - c^2) cotA + (c^2 - a^2) cotB + (a^2 - b^2) cotC = 0

In any triangle A B C , prove that: (b-c)cot A/2+(c-a)cot B/2+(a-b)cot C/2 =0

In any triangle A B C , prove that: (b-c)cot (A/2)+(c-a)cot (B/2)+(a-b)cot (C/2) =0

In any Delta A B C , prove that: a(b\ cos C-c cosB)=b^2-c^2

In a Delta A B C , prove that: ((b^2-c^2)/(a^2))sin2A+((c^2-a^2)/(b^2))sin2B+((a^2-b^2)/(c^2))sin2C=0

In Delta ABC , prove that: (a+b+c)/(a-b+c)=cotA/2cotC/2

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