Triangle ABC is right angled at C. If p is the length of the perpendicular from C to AB and a, b, c are the lengths of the opposite angles A, B and C respectively then prove that 1/p^2 = 1/a^2 + 1/b^2.

Continue reading “Triangle ABC is right angled at C. If p is the length of the perpendicular from C to AB and a, b, c are the lengths of the opposite angles A, B and C respectively then prove that 1/p^2 = 1/a^2 + 1/b^2.”

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