Q. ∠1 and ∠2 are supplementary angles. If m∠1=(4x−16)∘ and m∠2=(x+1)∘, then find the measure of ∠2.
Set up equation: Supplementary angles add up to 180 degrees. We can set up an equation with the given expressions for m/angle 1 and m/angle 2 to find the value of x.Calculation: (4x−16)+(x+1)=180
Simplify equation: Combine like terms to simplify the equation.Calculation: 4x+x−16+1=1805x−15=180
Isolate x: Add 15 to both sides of the equation to isolate the term with x.Calculation: 5x−15+15=180+155x=195
Solve for x: Divide both sides of the equation by 5 to solve for x.Calculation: 55x=5195x=39
Find angle 2: Now that we have the value of x, we can find the measure of angle 2 by substituting x into the expression for m/angle 2.Calculation: m/angle 2=(x+1) degreesm/angle 2=(39+1) degreesm/angle 2=40 degrees