Trigonometry Calculator

Sin, cos, tan and right-triangle side/angle solving — plain and simple.

Trigonometry Calculator helps you sin, cos, tan and right-triangle side/angle solving — plain and simple. Enter angle, length of that side, opposite side, and adjacent side, review the breakdown, and use the guidance below to understand what the number means — and what it does not. What the Trigonometry calculator does Trigonometry Calculator is built for arithmetic, algebra, geometry, and number tools. Sin, cos, tan and right-triangle side/angle solving — plain and simple. You enter angle, length of that side, opposite side, and adjacent side, then Simple Calculators computes the result instantly. Results use standard school and engineering formulas that run privately in your browser. How the math works Choose what you need. Sin / cos / tan of an angle: enter the Angle in degrees or radians and pick a Function; all six trig values are shown. Missing side: enter one acute Angle (between 0° and 90°), the Side you know and its length, and the other two sides follow from SOHCAHTOA: sin = opposite ÷ hypotenuse, cos = adjacent ÷ hypotenuse, tan = opposite ÷ adjacent. Missing angle: enter the Opposite side and Adjacent side, and the angle = inverse tangent of (opposite ÷ adjacent), given…