Question

If 3x + 10 is complementary angle 20° find x​

Answer 1

Answer:

3x+10+20=90

3x=90-20-10

3x=60

x=60/3=20°

Answer 2

Answer:

3x + 10 + 20=90

3x + 30 = 90

3x = 90 - 30 = 60

x = 60/3 = 20

a1 = 60°

a2= 10°

a3= 20°