Question

in triangle xyz,the measure of angle x is 30 degree greater than the measure of angle y and angle z is right angle find the measure of angle y

Answer 1

Sum of all three angles of triangle is 180°
angel x+y+z=180°
30+y+90=180
y+120=180
angel y= 180-120
= 60°

Answer 2

Given ,                           (All the values are in degree)

X = Y + 30  

Z = 90

In a triangle, sum of all interior angles = 180

                                X + Y + Z = 180

                             (Y +30) + Y + 90 =180

                               2Y = 60

                                Y = 30

Therefore, measure of angle Y is 30 degree.