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Home > CCA2 > Chapter 12 > Lesson 12.2.2 > Problem 12-114


Use the Pythagorean Identity to find the missing coordinate of this point on the unit circle: .

At any point on the unit circle, the corresponding right triangle has a hypotenuse of .

If you know the length of the vertical leg and the hypotenuse, how can you solve for the horizontal leg?

For any right triangle, .