Question

If ∆ABC ~∆ PQR and angle P = 50° ,angle B =60 °find angle R

Answer 1

In ∆PQR &∆ABC

Angle P=Angle A=50°

Angle B=Angle Q=60°

In∆ PQR

Angle P+Angle Q+Angle R =180°

50°+60°+Angle R =180°

110°+Angle R =180°

Angle R = 180°-110°

Angle R = 70°

Hope it helps you