What is the exact value of cos 30 degrees?
Understand the Problem
The question is asking for the exact value of the cosine function evaluated at 30 degrees. To solve it, we can use the known values of trigonometric functions for standard angles.
Answer
√3/2
The final answer is √3/2
Answer for screen readers
The final answer is √3/2
More Information
The cosine of 30 degrees is an important value in trigonometry and often appears in problems involving right triangles and trigonometric identities. It is irrational, so it can't be expressed as a simple fraction or a terminating decimal.
Tips
A common mistake is to confuse the decimal approximation 0.866 with the exact value, which is actually √3/2.
Sources
- The web page with info on - Byju's - byjus.com
- Find the Exact Value cos(30) - Trigonometry Examples - Mathway - mathway.com
- Find Value of Cos 30 Degrees - Cuemath - cuemath.com
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