Angles and Sides of a Right triangle (one angle is 90) Enter an angle and any side into the boxes above to get the other sides and angles using the 3 major trigonometric functions (sin, cos, tan) for the right triangle. After entering a side and angle click button [Calculate].
JavaScript © 2000 by John A. Byers

sin(angle A) = (side a)/(side c) or opposite side/hypotenus
cos(angle A) = (side b)/(side c) or adjacent side/hypotenus
tan(angle A) = (side a)/(side b) or opposite side/adjacent side
sin(angle B) = (side b)/(side c) or opposite side/hypotenus
cos(angle B) = (side a)/(side c) or adjacent side/hypotenus
tan(angle B) = (side b)/(side a) or opposite side/adjacent side
sin is sine, cos is cosine, tan is tangent,

Law of angular sum of triangle:
(angle A) + (angle B) + (angle C) = 180

To convert degrees to radians (which are used in the formulas):
degrees = radians(180/3.141593)
radians = degrees(3.141593/180)