Converting Between Radians and Degrees
This page covers converting between radian and degree measures of angles.
Formulas are provided for converting from degrees to radians:
radians = π/180 * degrees
And from radians to degrees:
degrees = 180/π * radians
Example: 1 radian ≈ 57.2958°
The page also introduces trigonometric ratios for acute angles in a right triangle:
sine = opposite / hypotenuse
cosine = adjacent / hypotenuse
tangent = opposite / adjacent
A worked example demonstrates calculating these ratios for a 3-4-5 right triangle.
Highlight: Memorizing the ratios for common angles like 30°, 45° and 60° is very helpful for trigonometry problems.