Question

Help me plssssss i don’t know how to do this

Answer 1

Answer:

AC = $\sqrt{15}$

Step-by-step explanation:

Assuming you require AC

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is

AC² + BC²= AB²

AC² + 7² = 8²

AC² + 49 = 64 ( subtract 49 from both sides )

AC² = 15 ( take square root of both sides )

AC = $\sqrt{15}$ ≈ 3.87 ( to 2 dec. places )