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Anonymous asked in Science & MathematicsMathematics · 2 months ago

If Angle Q = 42°, r = 17 cm, and p = 25 cm, what is the length of q, to the nearest centimetre?

2 Answers

  • ?
    Lv 7
    2 months ago

    See below for work and solution.

    Attachment image
  • 2 months ago

    I'm just assuming PQR is a triangle!

    q^2 = p^2 + r^2 - 2pr cos(42 deg)

    = (289 cm^2) + (625 cm^2) - (850 cm^2)*cos(42 deg)

    = 282.3269 cm^2 =>

    q = 17 cm.

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