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How to find an angle in a right triangle

A right triangle with sides r, y and x An Example of Calculating the Angles in a Triangle In the triangle above we are going to calculate the angle theta. Let x = 3, y = 4. Then by the Pythagorean

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Calculating Angles of Right Triangles

If you know 3 sides of a triangle (any triangle) you can apply the cosine formula: a^2 = b^2 + c^2 - 2 c b cosine A If you have a right triangle the problem is easier. You know that in a right

How to find an Angle in a Right-Angled Triangle?

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