Find the are of the triangles the coordinate of whose angular points are
`(1,30^(@)), (2,60^(@)), and (3,90^(@))`

Find the areas of the triangles the coordinates of whose angular points are: (-a,(pi)/(6))(a,(pi)/(2)), and (-2a,-(2 pi)/(3))

Find the equations to the sides of the triangles of the coordinates of whose angular points are respectively: (1,4),(2,-3) and (-1,-2) .

The equation of the sides of a triangle, the coordinates of whose angular points are: (3,5),(1,2) and (-7,4) .

Using the method of integration,find the area of the triangle ABC, coordinates of whose vertices are A(1,2),B(2,0) and C(4,3)

Find the orthocentre of the triangle ABC whose abgular points are A(1,2),B(2,3) and C(4,3)

Prove that the point (-(1)/(14),(39)/(14)) is the centre of the circle circumscribing the triangle whose angular points are (1,1),(2,3), and (-2,2)

Find the equations to the altitudes of the triangle whose angular points are A(2,-2),B(1,1) and C(-1,0)

Find the coordinates of the centre of the circle inscribed in a triangle whose angular points are (-36,7),(20,7) and (0,-8)