Question

Mark (✓) against the correct answer
In a ∆ABC, it is given that ∠B = 37°, and ∠C = 29°. Then, ∠A = ?

(a) 86°
(b) 66°
(c) 114°
(d) 57°

Answer 1

$$\begin{gathered} \left(c\right)114° \\ \begin{array}{l}\text{In triangle ABC:}\\ \angle \text{A+}\angle \text{B+}\angle {\text{C=180}}^0\\ =>\angle {\text{A=180}}^0-({37}^0+{29}^0)\\ =>\angle {\text{A=180}}^0-\left({66}^0\right)\\ ={114}^0\\ \end{array} \end{gathered}$$