Question

In ∆ ABC, if ∠ + ∠ = 108degrees and ∠ + ∠ = 130degrees


, find ∠ , ∠ and ∠.​

Answer 1

A+B=108° ; B+C=130°

A+B+C=180° A+B+C=180°

108°+C=180° A+130°=180°

C=180°-108° A=180°-130°

C=72°. A=50°

A+B=108°

50°+B=108°

B=108°-50°

B=58°