Question

ABC is a right triangle. if AC =4 and BC=10,find AB leave the answer in simplest radical form
a.116
b.4
c.2 racial 21
d.2 racial 26

Answer 1

AB = sqrt(10^2 - 4^2) = sqrt(100 - 16) = sqrt(84) = sqrt(4 x 21) = 2sqrt(21) = 2 radical 21.