An interactive pre-calculus study tool with live graphing, a unit circle explorer, and practice quizzes. Master the fundamentals of functions, trigonometry, and limits before diving into calculus.
This app is organized the way you should study it: graph the parent function, connect the angle to the unit circle, watch the transformation happen, then check recall with a short quiz.
Move the coefficients and watch slope, intercepts, curvature, and asymptotes change in real time.
Match the angle to coordinates, then read off cosine, sine, and tangent without guessing.
Use shifts, stretches, and reflections until the notation starts feeling obvious instead of arbitrary.
Finish with short topic-based drills so you can see what still needs another pass.
Degrees: 0°
Radians: 0
cos(θ): 1
sin(θ): 0
tan(θ): 0
| Angle | sin | cos | tan |
|---|---|---|---|
| 0° | 0 | 1 | 0 |
| 30° | ½ | √3/2 | √3/3 |
| 45° | √2/2 | √2/2 | 1 |
| 60° | √3/2 | ½ | √3 |
| 90° | 1 | 0 | undef |
| 180° | 0 | −1 | 0 |
| 270° | −1 | 0 | undef |
Linear, quadratic, polynomial, rational, exponential, and logarithmic functions with adjustable parameters to build intuition.
Interactive unit circle with angle-dragging, reference values, and live sin/cos/tan readouts for all four quadrants.
See in real time how a, h, k, and reflections reshape parent functions — no more guessing on exams.