Help triangle within a circle find side of triangle

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To find the length of a side of an equilateral triangle inscribed in a circle with a radius of 2.9 m, one can draw lines from each vertex to the circle's center, creating three isosceles triangles. Each isosceles triangle has two sides equal to the radius of the circle. By calculating the internal angles of these triangles, trigonometric functions can be applied to determine the length of the third side, which corresponds to the side length of the equilateral triangle. This method effectively utilizes the properties of isosceles triangles and trigonometry to solve the problem. The final calculation yields the side length of the triangle based on the given radius.
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The corners of an equilateral triangle lie on a circle of radius 2.9 m. Find the length of a side of the triangle.

find meters
 
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One way is to draw a line from each vertex of the triangle to the centre of the circle, splitting the equilateral triangle into 3 isosceles. If you consider one of these triangles, you can fairly easily work out all the internal angles, and you know the length of two of the sides of the isosceles triangle (the radius of the circle). From here you just use trigonometry to find the length of the third side, which is the length of the side of the triangle.
 

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