Question

Angle 1 and angle 2 are complementary angles. The measure of angle 1 is 30 degrees. The measure of angle 2 is 4x degrees. Find the value of x.

Answer 1

Complementary angles are angles with a sum of ninety degrees.

We have already been given values for angle 1 and angle 2, so we can input them into an equation:

30 + 4x = 90
4x = 60
x = 15

Answer 2

x=15

Explanation:

Complementary angles add to 90 degrees

<1 + <2 = 90

30 + 4x = 90

Subtract 30 from each side

30-30 +4x = 90-30

4x = 60

Divide each side by 4

4x/4 = 60/4

x = 15