Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Trigonometry! 螢幕截圖

iPad

iPhone

About Trigonometry!

Are your trigonometry exam at the corner? Our app will rescue you!

"Trigonometry" is your personal helper that provides you with all information required. Can you just imagine that with the help of one mobile app you can easily learn trig reviewing the textbook provided, observing visual explanations and watching video lessons?!

Downloading our app you get:

▶ FORMULAS

• Ordered set of basic formulas and theorems that can only be applied in the frameworks of this course
• Needed comments and explanations are given

▶ 172 VIDEO LESSONS

▶ TEXTBOOK

• It covers major topics
• Textbook is easy-to-read and easy-to-understand
• The book divided into:
- Right Triangle Trigonometry
- Angles
- Trigonometric Functions of an Acute Angle
- Applications and Solving Right Triangles
- Trigonometric Functions of Any Angle
- Rotations and Reflections of Angles
- General Triangles
- The Law of Sines
- The Law of Cosines
- The Law of Tangents
- The Area of a Triangle
- Circumscribed and Inscribed Circles
- Identities
- Trigonometric Identities
- Sum and Difference Formulas
- Double-Angle and Half-Angle Formulas
- Other Identities
- Radian Measure
- Radians and Degrees
- Arc Length
- Area of a Sector
- Circular Motion: Linear and Angular Speed
- Graphing and Inverse Functions
- Graphing the Trigonometric Functions
- Properties of Graphs of Trigonometric Functions
- Inverse Trigonometric Functions
- Solving Trigonometric Equations
- Numerical Methods in Trigonometry
- Complex Numbers
- Polar Coordinates

Stop being scared, download "Trigonometry"!