Cole found BC in ABC his work is shown below identify the first step in which his work shows an error
Can anyone help me with this question please.
No links or I’ll report.

Cole found BC in ABC his work is shown below identify the first step in which his work shows an error Can anyone help me with this question please No links or I class=

Respuesta :

Answer:

Length of BC = 12 inch

Step-by-step explanation:

Given:

ΔABC is a right angle triangle

Length of AB = 9 inch

Length of AC = 15 inch

Find;

Length of BC

Computation:

Using Pythagoreans theorem;

Hypotenues² = parpendicular² + Base²

Step 1 :

AC² = AB² + BC²

Step 2 :

15² = 9² + BC²

Step 3 :

225 = 81 + BC²

Step 4 :

225 - 81 = BC²

Step 5 :

BC² = 144

Step 6 :

BC = √144

Step 7 :

BC = 12 inch

Length of BC = 12 inch