Question

In ΔABC, ∠A = 76°, ∠B = 48°, ∴ C = ______.

विकल्प

• 66°

• 56°

• 124°

• 28°

Answer 1

In ΔABC, ∠A = 76°, ∠B = 48°, ∴ C = 56°.

Explanation:

In ∆ABC,

∠A + ∠B + ∠C = 180^∘    ...(Angle sum property of triangle)

⇒ 76^∘ + 48^∘ + ∠C = 180^∘

⇒ 124^∘ + ∠C = 180^∘

⇒ ∠C = 180^∘ − 124^∘ 

⇒ ∠C = 56^∘