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Thread: Trigo- product

  1. June 16th 2009, 07:16 AM #1
    dhiab
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    Trigo- product

    Solve in R this equation :
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  2. June 16th 2009, 07:24 AM #2
    alexmahone
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    sin x cos x tan x=1
    sin x cos x\frac{sin x}{cos x}=1
    sin^2x=1
    sin x=+1 or sin x=-1
    x=\frac{\pi}{2}+2n\pi or x=-\frac{\pi}{2}+2n\pi
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  3. June 16th 2009, 09:24 AM #3
    e^(i*pi)
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    Quote Originally Posted by alexmahone View Post
    sin x cos x tan x=1
    sin x cos x\frac{sin x}{cos x}=1
    sin^2x=1
    sin x=+1 or sin x=-1
    x=\frac{\pi}{2}+2n\pi or x=-\frac{\pi}{2}+2n\pi
    The above poster is right but bear in mind n \in \mathbb{Z}

    (ie: n must be an integer)
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