sin, tan and cos can be defined as functions of an angle. But they are not functions of a triangle - whether it is a right angled triangle or not.
There is no reason for the perimeter of a triangle to have any relation to the perimeter of an unrelated rectangle!
If you know the perimeter, there is no need to find it again.
You find the perimeter of a triangle by adding all the sides. There is no special rule for finding the perimeter.
A right triangle has one right angle and two acute angles. Right triangles have a hypotenuse and also two legs. You can use the Pythagorean Theorem to find the hypotenuse, or the two legs of the right triangle, as long as you have the side lengths of the other two sides on the right triangle.
how to find the perimeter of a right angled triangle using the area
It is: perimeter minus hypotenus+base = height Area = 0.5*base*height
A "right angle" doesn't have a perimeter. From the rest of the question, we suspect that you might have meant to say a "right triangle", but that's just a guess. The perimeter of any triangle is the sum of the lengths of all three sides. In a right triangle, the length of the longest side is the square root of the sum of the squares of the two short sides. We're sure you can handle it from here.
The height of a triangle alone is not enough information to find the perimeter. You need some angle measures or side lengths.
if the triangle has one right angle in it
The 90 degree angle in a right angle triangle is opposite its hypotenuse.
Find the perimeter of a right triangle with legs measuring 3 and 4
By using Pythagoras' theorem for a right angle triangle.
It has a 90 degree angle..
right angle!
It is the longest side of a right angle triangle.
There are two equal sides of 19 units in the right angled triangle. To find the third side use Pythagoras' theorem: 192+192 = 722. The square root of 722 = 26.87005769 Perimeter of triangle = 19+19+26.87005769 = 64.87005769 Therefore perimeter of triangle rounded to 2 decimal places = 64.87 units.