BD is a angle bisector and Angle bisector theorem says ratio of other sides of the triangle formed by bisector is equal BA/AD=BC/CD lets say AD is x so DC will be 4-x 3/x=4.5/4-x x=1.6 AD=1.6units so DC=4-x=4-1.6= 2.4 units
Rearranging Formula. This unit covers rearranging formulae. The manipulation of algebraic expressions is an important ... Changing the subject of a formula .
