Answer:
a ∆ABC and ∆EDC are similar
b. AB = 83.3 ft
Step-by-step explanation:
a.  We need to determine if  ∆ABC and ∆EDC are similar.
We know B = D = 90
We know C = C because they are vertical angles and vertical angles are equal
Therefore A = E because they are triangles, and if 2 angles in a triangle are equal the third angles must be equal.
∆ABC and ∆EDC are similar
b. Â We know that because they are similar triangles
AB Â Â Â BC
------ = ---------
ED Â Â Â Â DC
Substituting in
AB Â Â Â 62
------ = ---------
125 Â Â Â Â 93
Using cross products
93 AB = 62*125
93 AB = 7750
Divide by 93
AB = 7750/93
AB = 83.3333333333(repeating)
Rounding to the nearest tenth ft
AB = 83.3 ft
