Which of the following triometric ratios is equal to 0

Do not comment if you aren’t going to . create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

3. find the radius of circle p.4. find y.

Determine domain and range, largest open interval, and intervals which function is continuous.