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Home > PC > Chapter 3 > Lesson 3.1.3 > Problem 3-48


is an isosceles triangle with .
Right triangle, A B C, vertical leg, A B, & horizontal leg, A C, each labeled, 5.

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

    Use the Pythagorean Theorem.

  2. Write the sine ratio for . Reduce the fraction.

  3. Rationalize the denominator of the fraction you got in part (b) by multiplying the numerator and denominator by .