Asked by Matthew
In triangle ABC, the degree measure of angle A is 20 degree greater than the degree measure of angle B. Angle C is a right angle. What is the measure of angle B? Is it 70 degrees. 90-20=70
Answers
Answered by
PsyDAG
A = B + 20
90 + A + B = 180
Substitute B+20 for A in the second equation and solve for B. Insert that value into the first equation to solve for A. Check by putting both values into the second equation.
90 + A + B = 180
Substitute B+20 for A in the second equation and solve for B. Insert that value into the first equation to solve for A. Check by putting both values into the second equation.
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