Question

in triangle XYZ, the measure of angle x is 84, the measure of angle y is (r + 59) and the measure of angle z is (r + 51), find the value of r and the measure of angle Y

Answer 1

ar of triangle xyz = 180°

84+r+59+r51=180

2r+194=180

2r=180-194

2r=-14

r = -7

y = r+59

y=-7+59

y=52°