In a triangle `A B C`, `/_B=115^@,/_C=40^@,` Find `/_A`

Explanation

To find the measure of angle A in triangle ABC, where angle B is given as 115° and angle C is given as 40°, we can use the angle sum property of triangles.

### Step-by-Step Solution:

1. **Understand the Angle Sum Property**: In any triangle, the sum of the three interior angles is always 180°. This can be expressed as:
\[ \angle A + \angle B + \angle C = 180° \]
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