Cosine Course
Dive deep into cosine from unit circle fundamentals to advanced identities and practical modelling. This course equips mathematics professionals with the skills to analyse graphs accurately, construct precise periodic models for real-world cycles like motion and daylight, and solve right and oblique triangle problems using cosine and the law of cosines with confidence and precision. Ideal for educators and analysts seeking reliable tools and visuals.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
This course offers a focused, practical path to mastering cosine from first principles to real-world applications. Learners will build a solid understanding of the unit circle, symmetry, key angles, and core identities. They will confidently read and sketch transformed graphs, apply cosine to periodic models, triangle problems, and provide clear explanations for beginners, supported by polished examples, visuals, and reliable assessment items.
Elevify advantages
Develop skills
- Master cosine graphs: read, sketch, and transform y = A cos(ωx + φ) + C efficiently.
- Model real-world cycles: create cosine models for motion, daylight variations, and rotations.
- Apply cosine in triangles: solve geometry problems using cosine and the law of cosines.
- Utilise core trigonometric identities: simplify expressions, transform functions, and solve equations involving cosine.
- Teach cosine effectively: develop clear visuals, examples, and explanations 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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