Right Triangle Trigonometry Calculator

Calculate Right Triangle Sides and Angles

Enter length of side 'a'.
Enter length of side 'b'.
Specify measurement units (e.g., cm, m, ft).
Calculation Results

Hypotenuse (c):

Angle A: °

Angle B: °

Error

Use this free Right Triangle Trigonometry Calculator to effortlessly find missing sides and angles. Simply input two known leg lengths (sides 'a' and 'b'), and instantly get the hypotenuse 'c', angle 'A', and angle 'B'. Ideal for students, engineers, and anyone working with right triangles.

Formula:

For a right triangle with legs a and b, hypotenuse c, and acute angles A and B (where C = 90°), the formulas used are:

  • Hypotenuse (c): c = √(a2 + b2) (Pythagorean Theorem)
  • Angle A: A = atan(a / b) (The arctangent of the ratio of the opposite side 'a' to the adjacent side 'b', converted to degrees)
  • Angle B: B = 90° - A (Since the sum of acute angles in a right triangle is 90°)

These calculations assume you provide the lengths of the two legs (sides adjacent to the 90° angle).

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