Geometry & Trigonometry

Cosine

Cosine is a trigonometric function equal to adjacent divided by hypotenuse in a right triangle.

Meaning

What Is Cosine?

Cosine is a trigonometric function equal to adjacent divided by hypotenuse in a right triangle.

Cosine is a trigonometric function equal to adjacent divided by hypotenuse in a right triangle.

Examples

Examples of Cosine

1cos 60° = 1/2.
Understand

Formula and Key Points

Formula / rule
cos θ = adjacent/hypotenuse
  • Know the definition and standard notation for Cosine.
  • Be able to recognise or compute cosine in a small example.
  • Connect the concept to nearby topics in the same subject before using it in larger CSE problems.
CSE Connection

Why This Matters in Computer Science

Used in graphics, games, robotics, computer vision, spatial algorithms and coordinate calculations.

FAQ

Cosine: Frequently Asked Questions

What is Cosine?

Cosine is a trigonometric function equal to adjacent divided by hypotenuse in a right triangle.

Why is Cosine useful in computer science?

Used in graphics, games, robotics, computer vision, spatial algorithms and coordinate calculations.