Question

In the given figure ,line $\text{AB and CD}$ intersect at point $\text{O}$.
Find the value of $\angle \text{a}$

Answer 1

Step : Finding the value of angle a
Given $\text{AB and CD}$ are lines which intersect at point $\text{O}$
To find : The value of $\angle \text{a}$
Now ,since $\text{AB}$ is a straight line .
$\therefore \angle \text{AOB}={180}^{\circ }$
$\Rightarrow \angle \text{(AOC+BOC)}={180}^{\circ }$
$={68}^{\circ }+a={180}^{\circ }$[Given]
$\therefore \text{a}={112}^{\circ }$
Hence , the value of $\text{a}={112}^{\circ }$