Question 142643
B+C=90 OR C=90-B
A=3B
NOW WE ADD THE THREE ANCLES A,B & C.
3B+B+(90-B)=180
3B+B+90-B=180
3B=180-90
3B=90
B=90/3
B=30 DEGREES.
A=3830=90 DEGREES.
C=90-30
C=60 DEGREES.
PROOF:
90+30+60=180
180=180