Q. 14.2( 18 Votes )

In a triangle ABC

Answer :

Given: ∠A = 55° and ∠B = 40

As we know, using theorem (1), in any triangle, sum of the three interior angles is 180 °.

So,

∠A + ∠B + ∠ C = 180°

⇒ 55° + 40° + ∠ C = 180°

⇒ ∠ C = 180° - 55° - 40°

⇒ ∠ C = 85°

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