Question

Find the supplement of 3/10 of right angle.

Answer 1

supplementary angle=180degrees
3/10×90=27degrees
180-27=153 degrees

Answer 2

Supplement - 180°
3/10×90°+ y = 180°
270/10° + y = 180°
27° + y = 180°
y = 180°-27°
y = 153°