In a triangle, one of the angles is 40 degrees and the other is 3 1/8 times larger, calculate the value of the third angle.

Find the degree measure of the larger angle of the triangle. To do this, we multiply the degree measure of the smaller angle with the difference in degree measures between them:

40 * 25/8 = (40 * 25) / 8 = 5 * 25 = 125o – is the degree measure of the larger angle.

We calculate the value of the third angle through the difference of the sum of all angles of the triangle with the value of the sum of all known angles:

180 – (125 + 40) = 180 – 165 = 15о – is the degree measure of the third angle.

Answer: 15o.