By the given criterias ABC is a right angle triangle at B
- Base(BC) = 16cm
- Hypotenuse(AC) = 20 cm
By Pythagoras theorem ,
AB(Perpendicular)= √20²-16² cm
AB = 12 cm
Given :- ∆DEF ∼ ∆ABC
where Angle B and Angle E are 90°
Therefore , SinF = SinC
- SinC = AB/AC ; 12/20 = 3/5
Hence , SinF is 3/5