Cosine Course
Dive deep into cosine functions with this comprehensive course that takes you from unit circle fundamentals to advanced trigonometric identities and practical modelling. Designed for math enthusiasts and professionals, it equips you to confidently analyse graphs, create precise periodic models for real-world scenarios like motion and daylight variations, and solve both right and oblique triangle problems using cosine and the law of cosines with accuracy and ease.

flexible workload of 4 to 360h
valid certificate in your country
What will I learn?
This course offers a focused, practical approach to mastering cosine, starting from basic principles to advanced real-world applications. Learners will build a strong foundation in the unit circle, symmetry, key angles, and essential identities. They will gain confidence in reading and sketching transformed cosine graphs. The course covers applying cosine in periodic models, triangle problems, and beginner-friendly explanations, supported by clear examples, visuals, and reliable assessments.
Elevify advantages
Develop skills
- Master cosine graphs by quickly reading, sketching, and transforming y = A cos(ωx + φ) + C.
- Develop skills to model real-world cycles using cosine for motion, daylight changes, and rotations.
- Apply cosine effectively in triangles with cos and the law of cosines to solve geometry problems.
- Utilise core trigonometric identities to simplify expressions, transform functions, and solve cosine equations.
- Create clear teaching materials for cosine, including visuals, examples, and explanations for beginners.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
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