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  1. Prove that sin(x)+cos(x) is equal or larger than 1

    Started by Yankel, January 10th, 2017 05:22
    2 Pages
    1 2
    assume, contradiction, inequality, prove, [sin^2x-2sinxcosx+cos^2x
    • Replies: 11
    • Views: 855
    Last Post: January 15th, 2017 13:44
    by I like Serena  Go to last post

    Forum:
    Trigonometry

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