Question

An angle is exactly half of its complementary angle, then find the angle. (a) 30o (b) 40o (c) 50o (d) 60o

Answer 1

let the angles be X,X/2

then the sum of the complementary angles is 90 degrees

X+X/2=90

3X/2=90

3X=180

X=60

therefore the angle is 60 degrees