Solve the problems below. answer with completely simplified exact value(s) or expression(s). chapter reference c in δabc, ac = bc, cd ⊥ ab with d ∈ ab , ab = 4 in, and cd = 3 in. find ac.

  AC = √13 in

Step-by-step explanation:

CD is the altitude of isosceles triangle ABC, so D is the midpoint of AB, and AD = 2.

AD and CD are the legs of right triangle ACD, so ...

  AC² = CD² + AD² = (3 in)² + (2 in)² = (9 +4) in² = 13 in²

  AC = √(AC²) = √13 in ≈ 3.6055 in

c

step-by-step explanation:

explanation:

remove parenthesis:

=

apply rule

=

multiply fractions:

=

=

divide:

=

mordancy.