Solve right-angled triangles by inputting known sides or angles. View step-by-step calculations and a scale drawing of the triangle. Access basic trigonometric formulae. Enter angles in radians, decimal degrees, or degrees, minutes, seconds.
by Armchair Engineering★ 4.7481 ratingsUtilities$1.99Data updated 2026-11-04
Calculate areas for squares, rectangles, parallelograms, trapezoids, triangles, and circles. Input dimensions to get results. Includes built-in formulas for each shape.
Essential knots with detailed step-by-step guides. Rotate each step 360 degrees for clear visualization. Access tips and applications for each knot. Includes figure-eight, clove hitch, bowline, and more. No internet required.
