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    1. Solve algebraically the equation 2 sin 2x = -1 for (between 0 and 180 degrees)

    2.Express sinx cos 60 - cos x sin 60 in the form sin (A-B)

    Hence solve the equation sin x cos 60 - cos x sin60 = 3/4 for (between 0 and 360)

    3. Solve algebraically for (between 0 and 360)

    4. cos 2x - 2 sin x 0 1= -

    5. Prove that cos (x-y)/cos x cos y = 1 + tan x tan y

    Any help is greatly appreciated, thank you.
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    You posted your whole homework assignment....
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    (Original post by gilbo)
    You posted your whole homework assignment....

    Yes I know I can't do it...
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    you batty boy do it yourself :p:
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    Sorry mate I'm not doing your homework for you xD

    Perhaps the exercise book may give a helping hand?
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    (Original post by Wesssty)
    Sorry mate I'm not doing your homework for you xD

    Perhaps the exercise book may give a helping hand?

    I've tried the textbook honestly, I really need help...
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    Find the page on trig identities and see if you can substitutes some of the expressions in your homework for something easier.
 
 
 
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