Question

the measurement of one angle of a right triangle is $42^{\circ}$.
what is the measurement of the third angle?
enter your answer in the box.
$\square^{\circ}$

Explanation:

Step1: Note right triangle angle sum

The sum of angles in a triangle is $180^\circ$, and a right triangle has one $90^\circ$ angle.

Step2: Set up equation for third angle

Let the third angle be $x$. Then $90^\circ + 42^\circ + x = 180^\circ$.

Step3: Calculate the third angle

$x = 180^\circ - 90^\circ - 42^\circ$
$x = 48^\circ$

Answer:

$48$