Right Triangle Angle Calculator
Calculate the unknown angles of a right triangle when you know the lengths of the two shorter sides.
Length of the side opposite to angle A.
Length of the side opposite to angle B.
Results
Visual Representation
Understanding Right Triangle Angles
A right triangle is a triangle with one angle measuring exactly 90 degrees, known as the right angle. The sides adjacent to the right angle are called legs (Side A and Side B in our calculator), and the side opposite the right angle is the hypotenuse. This calculator helps you find the other two angles if you provide the lengths of the two legs. The angles are calculated using trigonometric functions, specifically the arctangent (atan) function, which relates the ratio of the sides to the angles in a right triangle. Remember, the sum of angles in any triangle is always 180 degrees, and in a right triangle, one angle is already 90 degrees.
You may also like these tools
Right Triangle Angle Calculator | Find Angles from Sides
Easily calculate the angles of a right triangle using side lengths.
Right Triangle Calculator: Calculate Sides and Angles
Calculate sides, angles, and trigonometric functions of right triangles easily with our online calculator.
Law of Sines Calculator: Solve Triangle Sides & Angles
Easily solve for unknown sides and angles of any triangle using the Law of Sines calculator.