Question

In the diagram, what is AC?

Answer 1

Answer:

the answer is 10

Step-by-step explanation:

I had the same question asked before

Answer 2

$|AC|=\sqrt{|AD|^2+|CD|^2}\\ |CD|=8\\ |AD|=?\\\\ |AD|=|AB|-|BD|=21-|BD|\\ |BD|=\sqrt{|CB|^2-|CD|^2}\\ |BD|=\sqrt{17^2-8^2}\\ |BD|=\sqrt{289-64}\\ |BD|=\sqrt{225}\\ |BD|=15\\\\ |AD|=21-15\\ |AD|=6\\\\ |AC|=\sqrt{6^2+8^2}\\ |AC|=\sqrt{36+64}\\ |AC|=\sqrt{100}\\ |AC|=10$