We know that
tan ∅=opposite side angle ∅/adjacent side angle ∅
adjacent side angle ∅=opposite side angle/tan ∅
in this problem
see the attached figure to better understand the problemangle ∅=80°
opposite side angle ∅=12 ft (AB)
adjacent side angle ∅=? (AC)
adjacent side angle ∅=12/tan 80°------> 2.12 ft
the answer is2.12 ft
Step-by-step explanation:

Answer:
13 slices, 3/10 inches left.
Step-by-step explanation:
10 divided by 3/4 = 10 divided by .75
10 divided by .75 = 13.3
13 slices, .3 inches (3/10) leftover
In this case the chords are congruent.
x = 7 + 7 = 14
See attachment file below.
Hope it helped!!