Elementary Trigonometric Equations

How to Use this Applet

The Graph Area

  • Drag "filled" locations in the unit circle graph ( , and/or ), or the "filled" location in the function graph ( ) to adjust the number on the right side of the trigonometric equation.
  • Drag any location along the function graph towards or away from the vertical axis to change n ( of nθ ).


  • Use the "sin", "cos" and "tan" buttons to change to the desired trigonometric function.
  • Use the "RADIANS" and "DEGREES" buttons to change between arclength along the unit circle (RADIANS) and the construct unit of DEGREES.