Question

Instructions: Find the missing side of the triangle.
25
20
х
X =

Answer 1

x = 15

Explanation:

Using Pythagoras' identity in the right triangle

x² + 20² = 25²

x² + 400 = 625 ( subtract 400 from both sides )

x² = 225 ( take the square root of both sides )

x =
`√(225)` = 15