Final answer:
The measure of the given angle in the triangle is 90 degrees.
Step-by-step explanation:
In a triangle, the measure of one angle is three times the measure of its vertically opposite angle. Let's denote the given angle as A and the vertically opposite angle as B. We are given that the measure of angle B is 30 degrees. So, we can set up the following equation:
A = 3B
Substituting the value of B, we get:
A = 3(30)
A = 90
Therefore, the measure of the given angle is 90 degrees.
Learn more about Triangle angles