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Five easy to use calculators to solve right triangle problems depending on which information you are given. The figure shown below will be used for sides and angle notations.
 In the above right triangle the sides that make and angle of 90° are a and b, and h is the hypotenuse. These calculators may be used to check your answers to questions that you have solved analytically.
Formulas Used in the Different CalculatorsThe Pythagorean theorem used in the above triangle givesa2 + b2 = h2 a = √ (h2 - b2) b = √ (h2 - a2) The trigonometric ratios used to find angles A and B are given by sin(A) = a / h , A = arctan(a / h) sin(B) = b / h , B = arctan(b / h) The area and perimeter of the right triangle are given by Area = (1/2) a b Perimeter = a + b + h
Calculator 1 - You know one side and the hypotenuseHow to use the calculatorsEnter the side and the hypotenuse as positive real numbers and press "calculate".
Calculator 2 - You know the two sides of the right triangleHow to use the calculatorsEnter the two sides as positive real numbers and press "calculate".
Calculator 3 - You know one side and the angle opposite to itHow to use the calculatorsEnter the side and the opposite angle as positive real numbers and press "calculate".
Calculator 4 - You know the hypotenuse and one angleHow to use the calculatorsEnter the hypotenuse and the angle as positive real numbers and press "calculate".
Calculator 5 - You know the perimeter and area of a right triangleHow to use the calculatorsYou might have to review area and perimeter of right triangles in order to understand the formulas used in this calculator. Enter the perimeter and the area as positive real numbers and press "calculate". More References and LinksSolve Right Triangle Problemsarea and perimeter of right triangles Online Geometry Calculators and Solvers. |
