The angle of measure 1 is equivocal to its adjacent angle, so M<1 = 39 degrees Because the summation of all angles of a triangle need to be 180 degrees, we can find M<3. We have an angle of 39 degrees and a right angle which is 90 degrees.Therefore M<3 is equal to 51 degrees
Using a graphing calculator, it is convenient to find where the difference between the two sides of the equation is zero. The associated real root is ...
