In triangle $ABC$, the measure of angle $A$ is $31^{\circ}$, the meas…

Question

Prompt

In triangle

A B C

, the measure of angle

A

3 1^{\circ}

, the measure of angle

B

9 0^{\circ}

and the measure of angle

C

(\frac{k}{2})^{\circ}

. What is the value of

k