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3-45.

Use the relationships in the diagrams below to write an equation and solve for . Homework Help ✎

  1. triangle

     

    This is a right triangle, so use the Pythagorean Theorem to solve for .

  1. diagram

    What is the sum of these angles?
    How can you use the sum of the angles to write an equation and solve for ?

  1. triangles

    Are these triangles similar?
    If so, how can you use their similarity to write an equation and solve for ?