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2-55.

Find the value of .

  1. Right triangle labeled as follows: vertical leg, 20, horizontal leg, x, hypotenuse, 29.

    Use the Pythagorean Theorem.

  1. Right triangle labeled as follows: vertical leg, 20, horizontal leg, x, hypotenuse, 30.

    See part (a).

  1. Triangle labeled as follows: left side, 25 Times Square root of 2, right side, x, left bottom angle, 45 degrees, right bottom angle, 30 degrees. Dashed line segment, from top vertex, perpendicular to bottom side.

    You can use special triangles and , or solve by using the Law of Sines.

    . Remember to check your work.