In a triangle `ABC;A=(pi)/(3),b=50,c=30,AD` is the length of the median through "A," then `AD^(2)` is equal to `49k^(2),k`

In a triangle ABC A=pi/3 ,b=50,c=30,AD is a median through A ,then (AD)/(5)=

In a triangle ABC if A-B=(pi)/(2) , then C+2B is equal to

If median AD of a triangle ABC makes angle (pi)/(6) with side BC, then the valur of (cot B-cot C)^(2) is equal to

In a triangle ABC, AD is the median through A and E is the midpoint of AD, and BE produced meets AC at F. Then AF is equal to

In triangle ABC, angle B is right angled,AC=2 and A(2,2),B(1,3) then the length of the median AD is

In a triangle ABC ,if the median AD through A is perpendicular to AB ,then AD is equal to (A) c tan B B) -ctanA (c) 2c tan A (D) -(c/2)tan A

If A(5,-1),B(-3,-2) and (-1,8) are the vertices of triangle ABC,find the length of median through A and the coordinates of the centroid.