Cosine Course
Master cosine from unit circle basics to advanced identities and modeling. This course equips math professionals to analyze graphs, build accurate periodic models for motion, daylight, and rotations, and solve right and oblique triangle problems with confidence and precision using cosine functions and key identities.

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 modeling. You will build a solid grasp of the unit circle, symmetry, key angles, and core identities. Learn to read and sketch transformed graphs confidently. Apply cosine to periodic models, triangle problems, and clear explanations for beginners, using polished examples, visuals, and reliable assessment items.
Elevify advantages
Develop skills
- Master cosine graphs: read, sketch, and transform y = A cos(ωx + φ) + C quickly.
- Model real cycles: build cosine models for motion, daylight, and rotations.
- Apply cosine in triangles: use cos and law of cosines to solve geometry problems.
- Use core trig identities: simplify, transform, and solve equations with cosine.
- Teach cosine clearly: design 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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