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Module DEMO-32-89DEMO-C-32

Cosine of an Angle

DEMO-C-32 • Programming in C

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Problem Statement

Write a program that reads an angle in radians and prints its cosine using cos.

Target difficulty: Easy

Constraints

None

Input Format

A single floating-point number (radians).

Output Format

The cosine value formatted to 2 decimal places.

Sample Testcases

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Sample #1
Public sample
Input
0.0
Output
1.00
Explanation
cos(0.0) = 1.00
Sample #2
Public sample
Input
3.14
Output
-1.00
Explanation
cos(3.14) = -1.00
Sample #3
Public sample
Input
6.28
Output
1.00
Explanation
cos(6.28) = 1.00
Sample #4
Public sample
Input
0.78
Output
0.71
Explanation
cos(0.78) = 0.71

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