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How do you find the third side of a right triangle when two sides are know?
Wiki User
∙ 15y ago
The longest side of a right triangle is the side opposite the right angle, known as the hypotenuse (H). If the other sides are called X and Y, then: H2 = X2 + Y2 and H = sqrt(X2+ Y2); X2 = H2 - Y2 and X = sqrt(H2 - Y2); Y2 = H2 - X2 and Y = sqrt(H2 - X2). For example, if X = 3 and Y= 4, H = sqrt(32 + 42) = sqrt(9 + 16) = sqrt25 = 5; if H = 5 and X = 3, then Y = sqrt(52 - 32) = sqrt(25 - 9) = sqrt16 = 4; if H = 5 and Y = 4, then Y = sqrt(52 - 42) = sqrt(25 - 16) = sqrt9 = 3.
Wiki User
∙ 15y ago
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How do you use sine cosine and tangent?
They are used to find the angle or side measurement of a right triangle. For example, if 2 sides of a right triangle have known values and an angle has a known measurement, you can find the third side by using sine, cosine or tangent.
Find the missing side of a right triangle whose hypotenuse is 13 if one of the sides of the triangle is 5?
12
How do you find angles on a right triangle?
You do not need to, if you have a right triangle that angle is 90* so the other 2 angles are 45* apiece. That is actually only partially accurate. There can be a right angled triangle with sides of 2-3-5. 5 being the hypotenuse in which the triangle's angles will not be 90-45-45 but 90-33.69-56.31. To find the angles of a right triangle, you will need to know the length of the sides. With the length of all three sides, you will need to utilize sine, cosine, and tangent to find the angles.
How do you find a missing side to a right triangle?
A triangle always has 180 units. You would have to add up the two sides and subtract that from 180.
How do you find the third side of the triangle when two sides are know?
Find the square root of one side squared plus the second side squared.
How do you solve to find a right triangle of you are given three sides?
Square the two smaller sides and add them together. Take the square root of the answer. If that is the same as the third side then you have a right angled triangle and if not, then you have not.
What can be found using the pythagorean theorem formula?
If you know two sides of a right triangle, the Pythagorean Formula lets you find the third side. Also, if you know all three sides of a triangle, you can confirm whether it is, or isn't, a right triangle.
How Pythagorean theorem is used?
If two sides of a triangle with a right angle are known, the Pythagorean Theorem can help you find the third one. It can also be used to verify whether a certain triangle is, indeed, a right triangle (if the three sides are known).
Where to use Pythagoras property?
We use Pythagoras property to find the length of the third side, when two sides of a right-angled triangle are given by the following formula: In a right triangle, Square of hypotenuse = sum of squares of other two sides.
What is the formula for perimeter of a right triangle when one side is missing?
Surely you know how to find the third side of a right triangle, when you know the lengths of the other two. Find it, and then add up the lengths of the three sides to get the perimeter.
How do you find the third side of a triangle when two sides and angle are known?
Depends on the Triangle. Right triangles with a 90 degree angle: http://en.wikipedia.org/wiki/Pythagorean_theorem
How do you find the side length of a right triangle if you have one side length?
One side is not enough. For a right triangle the third side can be calculated by Pythagoras' Theorem if you know the length of any two sides.
What is the difference between an scalene right triangle and a scalene obtuse triangle?
A scalene triangle is a triangle in which all three sides have different lengths. The difference between a scalene right triangle and a scalene obtuse triangle is that in the first one, we can find the measure length of the third side when we know the lengths of the two other sides, and in the second one we cannot.
How do you find out if a triangle is a right triangle without a picture?
-- If one of the triangles' angle measures is 90 degrees, than it is a right triangle. -- If two of the triangle's angles add up to 90 degrees, then it's a right triangle. -- If the squares of the lengths of two sides add up to the square of the length of the third side, then it's a right triangle.
When and how to use the Pythagorean theorem?
Definition:Pythagorean theorem (also known as Pythagoras' theorem) is a mathematical statement about the relation among the three sides of a right triangle (right-angled triangle).It states:"In a right angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides."In any right-angled triangle, if the sides forming the right-angle are known as a and b and the hypotenuse as c, then the relation among the three sides of a right triangle is given by this equation: a2 + b2 = c2.When to use it:If the length of two sides of a right angled triangle are already known, you can find the unknown length of the third side.How to use it:As you know the relation among the three sides of a right triangle is represented by the equation a2 + b2 = c2 , substitute the known values in the equation and find out the length of the third side by solving the equation.See the related link.
How do you find the perimeter of a right angled triangle if you have one side missing?
Use two sides and Pythagoras's theorem to work out the third side. Then simply add the three sides.
How do you use sine cosine and tangent?
They are used to find the angle or side measurement of a right triangle. For example, if 2 sides of a right triangle have known values and an angle has a known measurement, you can find the third side by using sine, cosine or tangent.
