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Home > PC > Chapter 3 > Lesson 3.1.1 > Problem 3-13


is an isosceles triangle with   

Right triangle, A,P,T, with hypotenuse, P,T, labeled, 8, and each leg, has 1 tick mark each.

  1. Find the exact length of . Express your answer in simple radical form.

    Use the Pythagorean Theorem. Since both legs are the same length, . Label these sides .

  2. What is the exact value of ?

    Use the value found in part (a) in the formula:

  3. What is the exact value of ?