0
for known 2 sides and included angle, use cosine theorem
a2=b2+c2-2bc cos(angle A)
for right-angled triangles, use Pythagoras's theorem
a2+b2=c2
21
Add your answer:
Earn +20 pts
What is formula of finding the perimeter of a triangle?
Perimeter of a triangle = (length of the first side) plus (length of the second side) plus (length of the third side)
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.
Can the sum of two sides of a triangle be equal to the third side?
no it can not be eaual but it can be greater than The sum of the lengths of any two sides of a triangle is greater than the length of the third side.
One side of triangle is 28 feet the other is 40 feet what is the length of the third?
The length of the other side can be anything between 12 and 68 feet
How do you describe the possible lengths of the third side of a triangle when the other tw sides are given?
The length of the third side must be greater than the difference between the length of the two given sides and it must be less than the sum of the two given sides. These limits can be derived from the fact that any two sides of a triangle must have a combined length greater than the third side.
What is the length of the third side of an equilateral triangle have?
The length of the third side of an equilateral triangle is the same as the lengths of both of the other two sides.
What is formula of finding the perimeter of a triangle?
Perimeter of a triangle = (length of the first side) plus (length of the second side) plus (length of the third side)
If one side of a triangle is 11 and the other side is 5 what is the minimum length of the third side?
The minimum third side length of a triangle having one side of 11 and another side of 5 is 6.
What is the measure of the third side of an equiteral triangle have?
The length of the third side is the same as the length of either of the other two sides.
What is the length of the third side in 6.0 and 8.0?
If the third side is the hypotenuse of a right triangle, it is 10.0
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.
A right-angled triangle has a hypotenuse of 25cm and one side of 15cm what is the length of the third side?
The length of the third side is 20 cm
What is the formula for perimeter of a tiragle?
Perimeter of a triangle = (length of the first side) plus (length of the second side) plus (length of the third side)
What is the third side an isosceles triangle?
An isosceles triangle has 3 sides 2 of which are equal in length
If two sides of a triangle equal 45 what does the third equal and what kind of triangle is this?
If two sides of a triangle each have length of 45 units, then the triangle is isosceles,and the third side can have any length less than 90 units.
What is the rule for the triangle in length and width?
A triangle has 3 sides. The sum of any two sides must be larger than or equal to the length of the third side, and the difference of any two sides must be less than or equal to the length of the third side.
The perimeter of a triangle is 57 the first side is twice the length of the second side the third side is seven more than the second side what is the length of each side?
the perimeter of a triangle is 86 inches. the largest side is four inches less than twice the smallest side. the third side is 10 inches longer than the smallest side. what is the length of each side?
