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  1. R

    cosine/sine law-- help please

    ok so if i use Sine law then i would get the result of x = 15.6Sin 64 [sub:rztywe7k][/sub:rztywe7k]Sin 52 x = 17.79 how about the consine law..how would i use that a^2 = b^2 + c^2 - 2abCOS A is this the forumla i am using..?? and thanks for your help also
  2. R

    cosine/sine law-- help please

    question is: A cottage under construction is to be 15.6 m wide. The two sides of the roof are to be supported by equal rafters that meet at a 52 degree angle. Determine the length of the raters to the nearest cm using (i) cosine Law and (ii) Sine Law. what i am having trouble with is that...
  3. R

    Please Help - one question

    Thank you sooooooo much for your help :D take care, rabia :)
  4. R

    Please Help - one question

    the question is: A jet flew from Tokyo to Bagkok, a distance of 4800 km. On the return trip, the speed was decreased by 200 km/h. If the difference in the times of the flight was 2 h, what wast the jet;s speed from Bangkok to Tokyo? here is what i have so far..its not much Let x represent...
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