In a ΔABC, if ∠A = 55°, ∠B = 40°, Find ∠C.

Question:

In a ΔABC, if ∠A = 55°, ∠B = 40°, Find ∠C.

Solution:

Given Data:

∠B = 55°, ∠B = 40°, then ∠C = ?

We know that

In a ΔABC sum of all angles of a triangle is 180°

i.e., ∠A + ∠B + ∠C = 180°

⇒ 55° + 40° + ∠C = 180°

⇒ 95° +∠C = 180°

⇒ ∠C = 180° − 95°

⇒ ∠C = 850°

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