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12 March, 16:19

In triangle ABC, how long is side c if A = 103°, C = 17°, and a = 21?

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Answers (1)
  1. 12 March, 19:29
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    c=6.30 units

    Step-by-step explanation:

    we know that

    Applying the law of sines

    a/sin (A) = c/sin (C)

    Solve for c

    c=a*sin (C) / sin (A)

    substitute the values

    c=21*sin (17°) / sin (103°) = 6.30 units
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