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Sine & Cosine Rules

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  • Find the value of x.
    36.5 degrees
  • Find the value of x.
    9.36 mm
  • Find the value of x.
    72.6 degrees
  • Find the value of x.
    7.91 mm
  • Do we use the sine or cosine rule here?
    sine
  • Find the value of x.
    11.3 cm
  • Bonus 10 points -  If two witches were watching two watches: which witch would watch which watch?
    Well Done!
  • Do we use the sine or cosine rule here?
    sine
  • Do we use the sine or cosine rule here?
    cosine
  • It's your lucky day!
    Free 25 points
  • It's not your lucky day!
    Zero points
  • Find the value of x.
    48.6 degrees
  • Do we use the sine or cosine rule here?
    cosine
  • Bonus 10 points - One-one was a racehorse. Two-two was one too. One-one won one race. Two-two won one too.
    Good job!
  • No question here!
    Free 25 points
  • It's not your lucky day!
    Zero points
  • Find the value of x.
    14.1 cm
  • Find the value of x.
    54.1 degrees
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