Before learning the sides of a triangle formula, let us recall a few things about a right-angled triangle. Sides of a right-angled triangle can be found out by using various methods like Pythagoras theorem or by using the perimeter of the triangle but sides of a triangle formula can be used to find the sides of the right-angled triangle quickly. For applying this method we just need to have one side of the triangle and an acute angle and we can find out the rest of the sides of the triangle. In the following section, we will learn about the sides of a triangle formula for the right-angled triangle.
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