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Khan academy functions algebra 2
Khan academy functions algebra 2





khan academy functions algebra 2

For example, another point on our circle is (3/√2, 3/√2). You will find that this works for every single point on the circle. Using this in the Pythagorean theorem, we find:ĭoes this work for the point we selected (aka (3, 0))? The hypotenuse would be the radius of our circle. The base of the triangle would be the x-axis, and the adjacent side would be some y-value.

khan academy functions algebra 2

Since this is a right triangle, we should be able to apply the Pythagorean theorem. Let's try to make a right triangle, where the center of the circle is one vertex, and its opposite vertex is the outer edge.

khan academy functions algebra 2

Let's find some points on the outer edge of the circle.Ī noticeable one is (3, 0) (3 units away from the center). Let's consider a circle with center (0, 0) (to make the explanation a little simpler) and radius 3.







Khan academy functions algebra 2