Find m< in geometry math 2

The measure of angle A is 22º.

Explanation:

From Geometry, we know that sum of internal angles in triangles equals 180º. Hence, we construct the following sum:

In addition, we know that:

The measure of angle A is 22º.

explanation:

since the crust is readily accessible, scientists have been able to perform hands-on experiments to determine its composition; studies on the more distant mantle and core have limited opportunities samples. so scientists also rely on analyses of seismic waves and gravity and as well as magnetic studies.