Question

X = a) 43 b) 58 c) 71

Answer 1

$28 \textdegree = \frac{1}{2} ( 114 \textdegree - \angle x)$

$28 \textdegree = 57 \textdegree - \frac{1}{2} \angle x$

$\frac{1}{2} \angle x = 57 \textdegree - 28 \textdegree$

$\frac{1}{2} \angle x = 29 \textdegree$

$\angle x = 29 \textdegree \times 2$

$\angle x = 58 \textdegree$