The vertices of a triangle are `(4,-5)`, `(5,-6)`, `(3,1)` then find the area of the triangle.

if the vertices of a triangle are (2,0), (11,6) and (-4,-4) then find the area of this triangle

Vertices of a triangle are (0, 5), (0, 0), (4, 0) then find area of triangle.

The vertices of a triangle are A(1,1),B(4,5) and C(6,13). Find cos A

The vertices of a triangle are A(1,1),B(4,5) and C(6,13) Find cos A.

The vertices of ABC are (-2,1),(5,4) and (2,-3) respectively.Find the area of the triangle and the length of the altitude through A.

Two vertices of a triangle are (4,-3)&(-2,5). If the orthocentre of the triangle is at (1,2), find coordinates of the third vertex.

If two vertices of a triangle are (1,3) and (4,-1) e and the area of triangle is 5 sq.units,then the angle at the third vertex lies in:

If in a triangle ABC,a=6,b=3 and cos(A-B)=(4)/(5) find the area of the triangle.

If A (2,7) ,B (-6,1) and C (-5,8) are the vertices of a triangle, then find the co-ordinates of circumcentre of that triangle .

The vertices of a triangle are A(5,4,6),B(1,-1,3) and (4,3,2) . The internal bisector of /_BAC meets BC in D. Find AD.