Q. ∠1 and ∠2 are complementary angles. If m∠1=(6x+15)∘ and m∠2=(x−9)∘, then find the measure of ∠1.Answer:
Set Up Equation: Complementary angles add up to 90 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.Equation: (6x+15)+(x−9)=90
Combine Like Terms: Combine like terms in the equation.6x+x+15−9=907x+6=90
Isolate x: Subtract 6 from both sides of the equation to isolate the term with x.7x+6−6=90−67x=84
Solve for x: Divide both sides of the equation by 7 to solve for x.77x=784x=12
Substitute x: Now that we have the value of x, we can find the measure of angle 1 by substituting x back into the expression for m/angle 1.m/angle 1=6x+15m/angle 1=6(12)+15
Calculate Angle 1: Calculate the value of m/angle 1.m/angle 1=72+15m/angle 1=87°