Question

angle a and angle b are supplementary to c if the measure of angle a is 12 less than 2 times the measure of angle c what is the measure of angle b

Answer 1

Supplementary angle sum is 90°

a+b=c

c=90°

Step-by-step:

according to question (A.T.Q.)

• a-12=2c
• 2c=a-12
• c=a-12/2
• since,
• c=90°
• 90=a-12/2
• 90x2=a-12
• 180+12=a
• a=192