for geometry:(
please help, will give brainist

Answer:
6.7
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Equality Properties
Trigonometry
Step-by-step explanation:
Step 1: Identify Variables
Leg a = x
Leg b = 2
Hypotenuse c = 7
Step 2: Solve for x