Is cosine adjacent over hypotenuse?
Understand the Problem
The question is asking about the definition of the cosine function in trigonometry, specifically whether it is defined as the adjacent side over the hypotenuse of a right triangle.
Answer
Yes, cosine is the ratio of the adjacent side to the hypotenuse.
The cosine of an angle is the ratio of the adjacent side to the hypotenuse.
Answer for screen readers
The cosine of an angle is the ratio of the adjacent side to the hypotenuse.
More Information
The cosine function is fundamental in trigonometry, used to relate the angles of a right triangle to the lengths of its sides.
Tips
Confusing sine and cosine is common. Remember: cosine involves the adjacent side, while sine involves the opposite side.
Sources
- Formulas for right triangles - Clark University - .clarku.edu
- Sine-Cosine-Tangent - grc.nasa.gov
- Sine, Cosine, Tangent - Math is Fun - mathsisfun.com
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