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Simultaneous trigonometric equations

  1. Jun 15, 2005 #1
    I am looking for help in solving a pair of simultaneous equations. I have not come accross any maths book that solves trigonometric ones. I was wondering if I could get a step by step solution. Thanking you in advance for your time:

    5.4=10cos(x) + 13.41cos(y) .............(i)
    0=10sin(x) + 13.41sin(y) ..............(ii)
  2. jcsd
  3. Jun 15, 2005 #2


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    Express "cos y" in terms of "cos x" using the II-nd equation and the relationship between the "sin" and the "cos".

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