find the value of x. x = ?°

Explanation:

Step1: Recall angle - sum property of a triangle

The sum of interior angles of a triangle is 180°.

Step2: Set up the equation

We have a right - triangle with angles 40°, 90° and x. So, 40°+90°+x = 180°.

Step3: Solve the equation for x

First, simplify the left - hand side: 130°+x = 180°. Then subtract 130° from both sides: x=180° - 130° = 50°.

Answer:

50