Trigonometry

Digital I/O
Analog I/O
Advanced I/O
Time
Math
Trigonometry
Random Numbers
Bits and Bytes
Interrupts
Serial Comm.

Ethernet
Ethernet (Server)
Ethernet (Client)
Servo Motor
Character LCD
SPI
I²C (Wire)
SD Card
SD (File Operations)
Periodic Operation
Clock (RTC)

This library provides trigonometry functions, carrying out sin, cos and tan calculations.

sin

Description

Calculates the sine (sin) of an angle (in radians).

Syntax

sin(rad)

Parameters

rad: The angle in radians (float)

Returns

The sine of the angle (double)

cos

Description

Calculates the cosine (cos) of an angle (in radians).

Syntax

cos(rad)

Parameters

rad: The angle in radians (float)

Returns

The cosine of the angle (double)

tan

Description

Calculates the tangent (tan) of an angle (in radians).

Syntax

tan(rad)

Parameters

rad: The angle in radians (float)

Returns

The tangent of the angle (double)

#include <Arduino.h>
void setup(){
    Serial.begin(9600);
}
 
void loop(){
     // print labels 
    Serial.print("RAD");       // prints a label
    Serial.print("\t");        // prints a tab
    
    Serial.print("SIN");  
    Serial.print("\t");      
  
    Serial.print("COS"); 
    Serial.print("\t");   
  
    Serial.print("TAN");
    Serial.print("\t");
    Serial.println("");
     
    for(float x=0; x< PI; x+=0.01){    // only part of the ASCII chart, change to suit
  
    // print it out in many formats:
        Serial.print(x);       // print as an ASCII-encoded decimal - same as "DEC"
        Serial.print("\t");    // prints a tab
  
        Serial.print(sin(x));  // print as an ASCII-encoded decimal
        Serial.print("\t");    // prints a tab
  
        Serial.print(cos(x));  // print as an ASCII-encoded hexadecimal
        Serial.print("\t");    // prints a tab
  
        Serial.print(tan(x));  // print as an ASCII-encoded octal
        Serial.print("\t");    // prints a tab
  
        Serial.println("");      // prints another carriage return
        delay(100);            // delay 100 milliseconds
    }
  
}