If the sides of a triangle are given along with an included angle, the area of the triangle can be calculated with the formula, Area = (ab × sin C)/2, where 'a' and 'b' are the two given sides and C is the included angle.
What is the Area of a Triangle with three Sides and an Angle? For example, if the height (altitude) of a triangle = 8 units, and the side of the triangle on which the altitude is formed is given (base) = 7 units, we can find its area using the formula, Area of a triangle = 1/2 × base × height. Area of a triangle = 1/2 × base × height. If we know the sides of a triangle along with its height, we can use the basic formula for the area of a triangle. What is the Area of Triangle with 3 Sides and Height? For example, if an equilateral triangle has a side of 6 units, its area will be calculated as follows. The area of an equilateral triangle can be calculated using the formula, Area = a 2(√3/4), where 'a' is the side of the triangle. If a triangle has 3 equal sides, it is called an equilateral triangle.
The area of a triangle with 3 sides can be calculated with the help of the Heron's formula according to which, the area of a triangle is √, where a, b, and c, are the three different sides and 's' is the semi perimeter of the triangle that can be calculated as follows: semi perimeter = (a + b + c)/2 What is the Area of Triangle with 3 Sides Equal? \( \begin\)įAQs on Area of Triangle with 3 Sides What is the Area of a Triangle With 3 Sides? Using one of the Trigonometric identities, Using law of cosines, cos A = (b 2 + c 2 - a 2) / 2bc. The proof of the formula for the area of triangle with 3 sides can be derived in the following way.Ĭonsider the triangle shown above with sides a, b, c, and the opposite angles to the sides as angle A, angle B, angle C. Proof of Area of Triangle with 3 Sides Formula
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