Find the missing side of a triangle calculator

To use the right angle calculator simply enter the lengths of any two sides of a right triangle into the top boxes. The calculator will then determine the length of the remaining side, the area and perimeter of the triangle, and all the angles of the triangle. If we know just two sides of a right triangle, we can use that information to find the third side, the area and perimeter of the triangle, and all the angles of the triangle. Amazing, right?

Finding the missing side or angle couldn't be easier than with our great tool — right triangle side and angle calculator. Choose two given values, type them into the calculator, and the calculator will determine the remaining unknowns in a blink of an eye! If you are wondering how to find the missing side of a right triangle, keep scrolling, and you'll find the formulas behind our calculator. There are a few methods of obtaining right triangle side lengths. Depending on what is given, you can use different relationships or laws to find the missing side:. If you know two other sides of the right triangle, it's the easiest option; all you need to do is apply the Pythagorean theorem:. If leg a is the missing side, then transform the equation to the form where a is on one side and take a square root:.

Find the missing side of a triangle calculator

Use our triangle calculator to solve the angles and sides of a triangle using trigonometry. Enter three known values including at least one side to calculate the remaining properties of a triangle. Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications. Full bio. Connor Smith is a professor of electrical and computer engineering with expertise in electromagnetics, microsystems, and magnetic materials and devices. Triangles are polygons with three sides and three interior angles between them. There are several types of triangles, including isosceles , equilateral , scalene, obtuse, acute, and right triangles. The Pythagorean theorem states that for a right triangle, the length of the hypotenuse squared is equal to the sum of the squares of each leg. For a right triangle with sides a and b , and a hypotenuse c , the Pythagorean theorem states:. So, if you know the length of any two sides of a right triangle, you can calculate the length of the third side using this formula. The Law of Sines or the Sine Rule states that for any oblique triangle that is, a triangle that has sides not perpendicular to each other , the ratio of a side length to the sine of its opposite angle is constant.

People also viewed…. The Law of Sines states:. The altitude divides the original triangle into two smaller, similar triangles that are also similar to the original triangle.

Please provide 3 values including at least one side to the following 6 fields, and click the "Calculate" button. A triangle is a polygon that has three vertices. A vertex is a point where two or more curves, lines, or edges meet; in the case of a triangle, the three vertices are joined by three line segments called edges. A triangle is usually referred to by its vertices. Furthermore, triangles tend to be described based on the length of their sides, as well as their internal angles. For example, a triangle in which all three sides have equal lengths is called an equilateral triangle while a triangle in which two sides have equal lengths is called isosceles.

Please provide 2 values below to calculate the other values of a right triangle. Right triangles, and the relationships between their sides and angles, are the basis of trigonometry. The sides of a right triangle are commonly referred to with the variables a, b, and c, where c is the hypotenuse and a and b are the lengths of the shorter sides. The altitude divides the original triangle into two smaller, similar triangles that are also similar to the original triangle. If all three sides of a right triangle have lengths that are integers, it is known as a Pythagorean triangle.

Find the missing side of a triangle calculator

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Purnima Singh , PhD. Learn how we calculated this below scroll down. Bike Calculator turns biking hours into trees! By Joe Sexton. Likely the most commonly known equation for calculating the area of a triangle involves its base, b , and height, h. Unlike the previous equations, Heron's formula does not require an arbitrary choice of a side as a base, or a vertex as an origin. How to find the sides of a right triangle There are a few methods of obtaining right triangle side lengths. Then we solve for c by adding the squared values of a and b and taking the square root of both sides. If you know one angle apart from the right angle, the calculation of the third one is a piece of cake:. By substituting the known values into the Law of Cosines expression and rearranging, you can solve for side a. Financial Fitness and Health Math Other. A triangle is a polygon that has three vertices. Knowing your BMR basal metabolic weight may help you make important decisions about your diet and lifestyle.

Finding the missing side or angle couldn't be easier than with our great tool — right triangle side and angle calculator. Choose two given values, type them into the calculator, and the calculator will determine the remaining unknowns in a blink of an eye! If you are wondering how to find the missing side of a right triangle, keep scrolling, and you'll find the formulas behind our calculator.

Missing side and angles appear. People also viewed…. Can a right angled triangle have equal sides? For the purposes of this calculator, the inradius is calculated using the area Area and semiperimeter s of the triangle along with the following formulas:. In the next section, we will see an example of how to calculate the sides of a triangle. Side a :. Use our triangle calculator to solve the angles and sides of a triangle using trigonometry. Financial Fitness and Health Math Other. In a triangle, the inradius can be determined by constructing two angle bisectors to determine the incenter of the triangle. We will use the same example as in the previous section. The base and height area formula states:. If the corresponding sides are also equal, then the triangle is considered congruent.