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Thread: need help with indefinite integral problem

  1. #1
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    need help with indefinite integral problem

    I need the indefinite integral of (sin(2x)/sin(x)) dx. Someone please show me the steps!
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  2. #2
    Member mohammadfawaz's Avatar
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    Lebanon - Beirut
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    Re: need help with indefinite integral problem

    Well, think about $\displaystyle sin(2x)$. How can you write it in another way? what formulas you know for $\displaystyle sin(2x)$. Once you do that, your integral is done.
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  3. #3
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    Re: need help with indefinite integral problem

    damn! Thanks, I cant believe I forgot about the double angle formulas :[
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