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3-83.

Use your Trig Table Graphic Organizer from problem 3-82 to help you determine the value of each variable below. Homework Help ✎

a.

By the Triangle Angle Sum Theorem, 79° + θ + 90° = 180°

θ = 11°

x ≈ 18.46

b.

Notice that the legs of the right triangle are the same lengths.

c.

Look at the hints in part (a).