"Basics" Menu: 
Trigonometric Functions 
This page will define and explain the trigonometric functions.

Formulas and Identities 
This page will cover the trigonometric formulas and identities used in this site.

Related Angles and the Quadrants 
This page will explain what related angles are and
how they are defined in the four parts of the coordinate axes (quadrants). 
Solution to a Right Triangle 
This page will explain the solution to a right triangle. 

"Solution" Menu: 
Given Two Sides 
This page will compute the solution to a right triangle,
and show how it is done, given two sides.

Given One Side & Hypotenuse 
This page will compute the solution to a right triangle,
and show how it is done, given its hypotenuse and one of its sides.

Given One Side & One Angle 
This page will compute the solution to a right triangle,
and show how it is done, given one of its sides and one of its acute angles (an angle less than 90°).


"Convert" Menu: 
Degrees & Radians Table 
This page will display a Degrees & Radians Table based
on a user entered starting degree. The user will be allowed to specify
the increment between values for hour, minutes, or seconds.

Degrees to Radians 
This page will compute degrees to radians along with
the trigonometric functions for that radian, and show how it is done.

Radians to Degrees  Decimal Number 
This page will compute radians (input as a decimal number) to degrees along with
the trigonometric functions for that degree, and show how it is done.

Radians to Degrees  Fraction Number 
This page will compute radians (input as a fraction) to degrees along with
the trigonometric functions for that degree, and show how it is done.
