Question

It is given that ∆ABC~∆DEF. If ∠A = 30° , ∠C = 50° , AB = 5cm, AC = 8cm and DF = 7.5cm, then which of the following is true? 

(a) DE = 12cm, ∠F = 50° 

(b) DE = 12cm, ∠F = 100° 

(c) DE = 12cm, ∠D = 100°

(d) EF = 12cm, ∠D = 30°

Answer 1

(b) DE = 12 cm, ∠ = 100°

Disclaimer: In the question, it should be ∆ABC ~ ∆DFE instead of ∆ABC ~ ∆DEF. In triangle ABC,