Cosine Course
Dive deep into cosine functions, from foundational unit circle concepts to sophisticated identities and real-world modelling. This course equips mathematics educators and professionals with the skills to analyse graphs accurately, create precise periodic models for cycles like motion and daylight, and tackle both right-angled and oblique triangle problems using cosine and the law of cosines with assured precision and clarity.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
This course provides a clear, hands-on guide to mastering cosine, starting from basic principles up to practical applications in modelling. Learners will gain a strong understanding of the unit circle, symmetry, important angles, and essential identities. They will confidently interpret and draw transformed cosine graphs. The course covers using cosine for periodic phenomena, triangle calculations, and straightforward explanations ideal for beginners, supported by clear examples, diagrams, and reliable practice exercises.
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 such as motion, daylight variations, and rotations using cosine.
- Apply cosine effectively in triangles, employing the law of cosines to solve geometry challenges.
- Utilise key trigonometric identities to simplify expressions, transform functions, and solve cosine equations.
- Create clear teaching materials including visuals, examples, and explanations to teach cosine to 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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