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If p1p2,p3 are the lengths of altitudes ...

If `p_1p_2,p_3` are the lengths of altitudes of a triangle from the vertices `A, B, C and Delta` the area fo the triangle the `1/p_1 + 1/p_2 - 1/p_3`=

A

`(2ab)/((a+b+c)Delta)cos^2""A/2`

B

`((2ab)cos^2C//2)/((a + b+c)Delta)`

C

`(2ab cos^2 B //2)/((a +b + c)Delta)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
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