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If p1, p2, p3 are the altitudes of a tri...

If `p_1, p_2, p_3` are the altitudes of a triangle from the vertices A, B, C and `triangle`, the area of the triangle, prove that : `1/p_1+1/p_2-1/p_3= (2ab)/((a+b+c)triangle) cos^2 frac (C)(2)`.

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MODERN PUBLICATION-TRIGNOMETRY-EXERCISE
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  3. Find the radian measure corresponding to the following degree measure ...

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  4. Find the radian measure corresponding to the following degree measure ...

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  5. Find the radian measures corresponding to the following degree measure...

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  9. Find thedegree measure corresponding to the following measure. (Use pi...

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  10. Find thedegree measure corresponding to the following measure. (Use pi...

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  11. Find thedegree measure corresponding to the following measure. (Use pi...

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  12. Find thedegree measure corresponding to the following measure. (Use pi...

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