I'm going to be a sophomore in high school this coming school year and I want to major in physics and/or mathematics in college so I am doing the college algebra course from Udacity to further my education. I am wondering; after taking this course will I have all I need to be able to move on to trigonometry or will I still need to focus more on algebra? If I can move on what are some good online trigonometry courses? If I shouldn't move on what else should I learn and where should I learn it from? I know this is a lot of questions but I have been wondering this for a while and any help would be appreciated. Thanks. Here is what the course covers: Lesson 1: Number Lesson 2: Expressions Lesson 3: Polynomials Lesson 4: Equations Lesson 5-1: Coordinates Lesson 5-2: Distance Lesson 5-3: Midpoints And Slope Lesson 6-1: Slope And Equations Lesson 6-2: Points Lesson 7: Forms of the Equation of a Line Lesson 8: Inequalities And Absolute Value Lesson 9: More Inequalities And Equations Lesson 10: Parabolas Lesson 11: Factoring Lesson 12: Quadratic and Rational Inequalities Lesson 13: More Parabolas Lesson 14: Completing the Square Lesson 15: Quadratic Formula Lesson 16: Complex Numbers Lesson 17: Functions Lesson 18: Domain and Range Lesson 19: Behavior of Functions Lesson 20: Factor Theorem Lesson 21: Rational Zero Test Lesson 22: Intermediate Value Theorem Lesson 24: Asymptotes Lesson 25: Slant Asymptotes Lesson 26: Transformations Lesson 29: Exponential Functions Lesson 30: Scientific Notation Lesson 31: Logarithmic Functions Lesson 32: Log Properties Lesson 33: Solving Exponential and Logarithmic Equations Lesson 34: Population, Scrolls and Sound This may cover most of Algebra 2 but I am wondering if there is enough practice problems for this course to be sufficient enough for me to be able to move on to trigonometry immediately after I finish the course.