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If in triangle A B C , the median A D an...

If in triangle `A B C ,` the median `A D` and the perpendicular `A E` from the vertex `A` to the side `B C` divide the angle `A` into three equal parts, show that `cosA/3sin^2A/3=(3a^2)/(32 b c)dot`

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
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