The formulas in math class 9 cover a wide range of topics, including algebra, geometry, trigonometry, and statistics. Here are the steps you can take to find all the formulas for math class 9:

1. Check your textbook: Your math textbook should have a list of important formulas at the beginning or end of each chapter. Make sure to review these formulas and practice them regularly.

2. Search online: You can find a plethora of websites that provide comprehensive lists of formulas for math class 9. However, make sure to use reputable sources such as EduRev.

3. Watch video tutorials: Video tutorials can be a great resource for learning math formulas. Websites like EduRev have a wide range of video tutorials that explain math formulas in detail.

4. Practice problems: The best way to learn math formulas is by practicing problems. Make sure to practice a variety of problems using different formulas.

Some of the important formulas for class 9 math are:

1. Formula for finding the area of a triangle: A = 1/2 x base x height
2. Formula for finding the perimeter of a rectangle: P = 2(length + width)
3. Formula for finding the volume of a cube: V = s^3 (where s is the length of the side of the cube)
4. Formula for finding the circumference of a circle: C = 2πr (where r is the radius of the circle)
5. Formula for finding the slope of a line: m = (y2 - y1) / (x2 - x1)

In conclusion, while there is no definitive list of all formulas for math class 9, you can find them by checking your textbook, searching online, watching video tutorials, and practicing problems. Make sure to prioritize reputable sources like EduRev and practice a variety of problems to master the formulas.