Question

what is the value of a? write your answer as an integer or as a decimal rounded to the nearest tenth.

Explanation:

Step1: Use angle - sum property of a triangle

The sum of interior angles of a triangle is 180°. Let the third - angle be \(x\). So, \(x + 43^{\circ}+32^{\circ}=180^{\circ}\).

Step2: Solve for \(x\)

\(x=180-(43 + 32)=180 - 75=105^{\circ}\).

Answer:

\(105\)