Question

the diagram shows a triangle.
what is the value of a?
a = \boxed{}^\circ
submit

Explanation:

Step1: Recall triangle angle sum

The sum of angles in a triangle is \(180^\circ\).

Step2: Calculate angle \(a\)

We know two angles: \(38^\circ\) and \(74^\circ\). So, \(a = 180^\circ - 38^\circ - 74^\circ\).
First, \(38 + 74 = 112\). Then, \(180 - 112 = 68\). So \(a = 68^\circ\).

Answer:

\(68\)