Right Triangle Calculator
For a short trigonometry tutorial, click here.

The above graphic is a right triangle with sides labeled in terms of Angle A (NOT B).

ANY right triangle can be solved for ALL sides and angles if you just know
1) two sides OR 2) one angle and one side.

In the first case (2 sides), you can determine the 3rd side and ALL the angles by going to the following link: Pythagorean Theorem Calculator

In the second case (1 angle and 1 side), the known angle MUST be Angle A. If you only know Angle B, calculate Angle A by subtracting Angle B from 90 degrees .

Click on the side that is known.
or or

Clicking on any of these buttons will clear all 6 boxes on the right side.

Significant Figures >>>
Numbers are displayed in scientific notation with the amount of significant figures you specify. For easier readability, numbers between .001 and 1,000 will not be in scientific notation but will still have the same precision.
You may change the number of significant figures displayed by changing the number in the box above.
Most browsers, will display the answers properly but if you are seeing no answers at all, enter a zero in the box above, which will eliminate all formatting but at least you will see the answers.

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