Question

Find the measure of angle A for the triangle shown.oThe value of angle A is

Answer 1

The sum of the internal angles of a triangle must be equal to 180 degrees. We were given two of the angles and need to calculate the last one, to do that we will solve the following equation:

`\measuredangle A+\measuredangle B+\measuredangle C=180`

Applying the data from the triangle we have:

`\begin{gathered} \measuredangle A+100+47=180 \\ \measuredangle A+147=180 \\ \measuredangle A=180-147 \\ \measuredangle A=33 \end{gathered}`

The angle A measures 33 degrees.