Question

what is the measure of angle 3​

Answer 1

$180^{\circ}$ is equal to $\pi$,

$180^{\circ}=\pi$

$3^{\circ}=\frac{\pi}{180^{\circ}}\times 3^{\circ}\\=\frac{\pi}{60}\\=0.0523$

Answer 2

We can find the measure of angle 3 as 64 degrees.

To find the measure of angle 3

We know that the sum of all the angles in a triangle is $180$ degrees.

$m < 1 +m < 2+m < 3 = 180\\58+58 +m < 3= 180\\116+m < 3=180\\m < 3=180-116\\m < 3=64$

Thus we can add the measure of first 2 angles and subtracting it from 180 degrees, so we will get 64 degrees.

Complete question:

what is the measure of angle 3​?