Trigonometry

Digital I/O
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Utility

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
            }
            
        }