Question

what is the value of v? 49° 78° v

Explanation:

Step1: Use angle - addition property

We know that the sum of the two smaller angles equals the larger angle. So, $49^{\circ}+v = 78^{\circ}$.

Step2: Solve for v

Subtract $49^{\circ}$ from both sides of the equation: $v=78^{\circ}- 49^{\circ}$.
$v = 29^{\circ}$

Answer:

$29$