QuestionZain draws a circle with radius $r$ and center $(h, k)$ in the coordinate plane. He places the point $(x, y)$ on the circle. How can Zain use his drawing to derive the general equation of a circle in standard form? Use the drop-down menus to explain your answer.
Click the arrows to choose an answer from each menu. Using any center point $(h, k)$ and any point on the circle $(x, y)$, zain can draw a right triangle that has a hypotenuse of length $r$ land legs of lengths Choose... * Then, Zain can derive the general equation of a circle in standard form by applying the Choose...