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Math Help - High School Trig

  1. #1
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    High School Trig

    Simplify

    cos^4 x + 2cos^2 x sin^2 x + sin^4 x
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  2. #2
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    Quote Originally Posted by acherucheril View Post
    Simplify

    cos^4 x + 2cos^2 x sin^2 x + sin^4 x
    Hint: Let cos^2 x = a and sin^2 x = b and see if that helps you think it out.
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  3. #3
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    Quote Originally Posted by Debsta View Post
    Hint: Let cos^2 x = a and sin^2 x = b and see if that helps you think it out.
    still confused. =/
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  4. #4
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    Quote Originally Posted by acherucheril View Post
    still confused. =/
    your expression is a perfect square trinomial ... factor it.
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  5. #5
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    Quote Originally Posted by acherucheril View Post
    still confused. =/
    Your expression is of the form:
    a^2+2ab+b^2
    Ring any bells??
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