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cos()
Description
Calculates the cosine of an angle (in radians). The result will be between -1 and 1.
Syntax
cos(rad)
Parameter Values
- rad: The angle in radians. Allowed data types: float.
Return Values
- The cos of the angle. Data type: double.
Example Code
void setup() {
Serial.begin(9600);
for (int angle = 0; angle <= 180; angle += 15) {
float angle_rad = angle * M_PI / 180;
float cos_result = cos(angle_rad);
Serial.print("cos(");
Serial.print(angle);
Serial.print("°) = ");
Serial.println(cos_result);
}
}
void loop() {
}
The result in Serial Monitor:
COM6
cos(0°) = 1.00
cos(15°) = 0.97
cos(30°) = 0.87
cos(45°) = 0.71
cos(60°) = 0.50
cos(75°) = 0.26
cos(90°) = -0.00
cos(105°) = -0.26
cos(120°) = -0.50
cos(135°) = -0.71
cos(150°) = -0.87
cos(165°) = -0.97
cos(180°) = -1.00
Autoscroll
Clear output
9600 baud
Newline
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