Trigonometric
Learn trig by seeing it move
Free · Designed for iPad. Not verified for macOS.
Drag, spin and explore trigonometry: unit circle, 3D sphere, graphs with your own formulas, triangle solver, formulas and quiz. Free, no ads.
Learn trigonometry by seeing it move. Trigonometric turns every formula into something you can drag, spin and explore — free, with no ads, no accounts and no internet needed.
UNIT CIRCLE
• Drag point A round the circle or use the slider and play button
• Change the radius OA and read x = OA·cos θ, y = OA·sin θ, arc length AB, circumference and sector area
• Exact values such as √3/2, angles in degrees and as multiples of π, quadrant signs (All–Sin–Tan–Cos) and the tangent line
3D SPHERE — SPHERICAL COORDINATES
• Place a point P(r, θ, φ) on a glass sphere you turn with your finger
• See it converted to x, y, z and back, with top and side views
• Explore the volume element r² sin θ dr dθ dφ
GRAPHS
• A rotating circle draws sin, cos and tan, projected straight onto the curve
• Reshape y = A·f(Bx + C) + D with sliders and read amplitude, period, phase shift and midline
• Type your own formula — or try examples like a Fourier square wave, a damped wave or beats
TRIANGLE SOLVER
• Solve any triangle from three values: SSS, SAS, ASA/AAS and the ambiguous SSA case
• Drawn to scale, with area, perimeter and every step of the working
FORMULAS & QUIZ
• A searchable cheat sheet of identities, the laws of sines and cosines and the special-angle table
• Quick ten-question quizzes with an explanation after every answer
Three colour themes, full iPad support and a side-by-side landscape layout. Made for students, teachers and anyone curious about trigonometry.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Completely rebuilt for modern iPhone and iPad:
• New design with three themes and landscape support
• Unit circle with radius OA, x, y, arc length and sector area
• New 3D sphere for spherical coordinates
• Graphs with a rotating circle and your own formulas
• New triangle solver with step-by-step working
• Formula sheet and practice quiz
The developer, hirenkumar patel, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- hirenkumar patel
- Size
- 51.3 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Age Rating
4+
- 4+
- Copyright
- © 2026 Hirenkumar Patel