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19 October, 12:04

Assume that Q, R, and S are the angles of a triangle, with opposite sides q, r, and s respectively. Select all of the following that represent the law of cosines.

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Answers (2)
  1. 19 October, 13:40
    0
    Answer:q2 = r2 + s2 - 2rscos (Q)

    r2 = q2 + s2 - 2qscos (R) s2 = q2 + r2 - 2qrcos (S)
  2. 19 October, 14:34
    0
    One could be

    s^2 = q^2 + r^2 - 2*q*r cos S
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