Question

∠1 and ∠2 are complementary angles. The measure of ∠1 is 42°. The measure of ∠2 is (3x)°. Find the value of x.

Answer 1

x =14

Explanation:

3x = 42

42/3

x = 14

Answer 2

x=16

Explanation:

Complementary angles add to 90 degrees

∠1+∠2 =90

Substitute 42 in for ∠1, and 3x in for ∠2

42+3x=90

Subtract 42 from both sides

3x=48

Divide by 3 on both sides

x=16

Hope this helps! :)