In a Δ ABC , if ∠ A = 55°, ∠ B = 40°, find ∠ C

Question

In a &#x394; ABC , if &#x2220; A = 55&#xB0;, &#x2220; B = 40&#xB0;, find &#x2220; C

Philoid · Accepted Answer

Given, ∠A = 55^o

∠B = 40^o and ∠C =?

We know that, In sum of all angles of triangle is 180^o

∠A + ∠B + ∠C = 180^o

55^o + 40^o + ∠C = 180^o

95^o + ∠C = 180^o

∠C = 85^o