Question

Use the Pythagorean theorem to find the missing side. C=9, a=3, find b.

Answer 1

Pythagorean Theorem is a
`a^(2) + b^(2) = c^(2)` . Plug in the given values: 3^2 + b^2 = 9^2
9+b^2 = 81
b^2 = 81-9
b^2 = 72
Square root both sides:
b =
`√(72)`
Simplify
`√(72)` =
`6 √(2)`

Answer 2

the square root of 90 is aprox. 9, thats your answer :)