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Math Help - Changing functions in between sine/cosine

  1. #1
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    Post Changing functions in between sine/cosine

    Change 2sin(1/2x-2) to a cosine function.

    Change cos(1/4x+1) + 2 to a sine function.

    Thanks for any help!
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  2. #2
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    Quote Originally Posted by live_laugh_luv27 View Post
    Change 2sin(1/2x-2) to a cosine function.

    Change cos(1/4x+1) + 2 to a sine function.

    Thanks for any help!
    You can use the basic property \sin(\frac{\pi}{2}-\theta)=\cos(\theta). This is also true if you switch the cos and sin.
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