Question

In the adjacent figure value of $x$

• A. ${67}^o$
• B. ${157}^o$
• C. ${179}^o$
• D. ${360}^o$

Answer 1

The correct option is A ${67}^o$

Let,

${56}^{\circ }+x6\circ +\angle ACB={180}^{\circ }$

And, $\angle ACB=180-123={57}^{\circ }$

Therefore,

$x+{56}^{\circ }+{57}^{\circ }=180$

$x={67}^{\circ }$