Cosine Course
Dive deep into cosine starting from unit circle foundations up to complex identities and real-world modelling. Cosine Course equips maths experts to examine graphs accurately, create precise periodic models, and tackle right and oblique triangle challenges with assurance and exactness. Perfect for building strong trig skills applicable in teaching, engineering, and analysis.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
This course provides a clear, hands-on guide to understanding cosine from basic principles to practical uses. You will explore the unit circle, symmetry, important angles, and essential identities. Gain skills to interpret and draw transformed cosine graphs confidently. Apply cosine in periodic modelling, triangle calculations, and simple explanations for starters, with reliable examples, diagrams, and quizzes ready for immediate use.
Elevify advantages
Develop skills
- Master cosine graphs: quickly read, sketch, and adjust y = A cos(ωx + φ) + C forms.
- Create models for real cycles: use cosine for motion, daylight changes, and rotations.
- Solve triangle problems with cosine: apply cos and law of cosines in geometry.
- Work with key trig identities: simplify, adjust, and solve cosine equations.
- Explain cosine simply: craft diagrams, examples, and guides for beginners.
Suggested summary
Before starting, you can change the chapters and 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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