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20 August, 01:08

In triangle DEF measurement angle D = 45 degrees meausrement angle E = 63 degrees and EF = 24 inches. What is DE to the nearest tenth of a inch?

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Answers (2)
  1. 20 August, 02:46
    0
    The answer is A, I just took a test with this question. Triangles and Trigonometry Unit Test
  2. 20 August, 03:34
    0
    Since the angles add to 180°, angle F is 72°.

    Using the law of sines,

    DF/sin72° = 24/sin45°

    x = 32.28

    So, did you just guess at A?

    This is just an answer from another website, but it should still work.
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