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haleyking345

  • 2 years ago

Sketch the graph of y=cos(x+pie/2). I don't understand how to do this.

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  1. ZeHanz
    • 2 years ago
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    Do you know how to sketch the graph of y = cosx ?

  2. haleyking345
    • 2 years ago
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    yes i do

  3. ZeHanz
    • 2 years ago
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    The graph of y = cos(x + pi/2) looks a lot like y = cos x. You could see this as follows: cos 0 = 1 is the starting point of the "normal" cos. To get 1 as a result from your function, you need to substitute -pi/2 for x. That means the starting point of cos(x + pi/2) has shifted...

  4. haleyking345
    • 2 years ago
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    to the left right?

  5. ZeHanz
    • 2 years ago
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    Right, to the left!

  6. haleyking345
    • 2 years ago
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    So, it would start at -pie/2 and would it go to pie/2 in the positive direction?

  7. ZeHanz
    • 2 years ago
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    The period (2pi) hasn't changed, so it would end at 3pi/2, exactly 2pi to the right from -pi/2

  8. haleyking345
    • 2 years ago
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    oh, ok i get it now thanks!!!

  9. ZeHanz
    • 2 years ago
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    Thank you too!

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