Question

One angle of a right triangle measures 77 degrees what is the measure of the third angle

Answer 1

EXPLANATION

Let's see the facts:

-One angle = 77

Since this is a right triangle we know we have a 90° angle.

We also know that the 3 angles of a triangle add to 180°.

-Right angle = 90°.

The third triangle will be:

77+90 + third angle= 180

Adding similar terms:

167 + third angle = 180

Subtracting -167 to both sides:

Third angle = 180 -167

Simplifying:

Third angle = 13°

Answer is 13°.