4. In Fig. 10.38, Z ABC 69째, Z ACB 31째, findZ BDC.69째31째 – InterviewSolution

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4. In Fig. 10.38, Z ABC 69째, Z ACB 31째, findZ BDC.69째31째

Answer»

In ∆ ABC,∠A + ∠ABC + ∠ACB = 180°∠A = 180° - 100° = 80°

∆ABC and ∆ DBC have same base.∠B = ∠A∠B = 80°

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