In the diagram, ABC is a right triangle with the right angle at C, AC 5 4.0, BC 5 3.0
Chapter 1, Problem 17(choose chapter or problem)
In the diagram, ABC is a right triangle with the right angle at C, AC 5 4.0, BC 5 3.0, and mBAC 5 u. Side is extended to D and mDAC 5 2u. a. Find the exact value of sin 2u. (Hint: Use the double-angle formulas.) b. Find u to the nearest degree. c. Find DC to the nearest tenth.
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