Answer:
AB:
we know the adjacent angle, it measures 60°, we know the hypotenuse BC
cos60=AB/BC
cos60=AB/12
AB=12*cos(60)=6 inches
CA:
we know the adjacent angle, it measures 30°, we know the hypotenuse BC
cos30=AC/BC
cos30=AC/12
AC = 12*cos(30)=6V3 about 10.4
Explanation: