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Math Help - Need help with trig problem

  1. #1
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    Need help with trig problem

    Sketch t=3pi/5 on the unit circle.

    What is the reference number for t? I know the reference number is 2pi/5.

    Find to the nearest hundredth: sin t? cos t?
    -How do you find these?

    The terminal point determined by t is : ( , ) ?

    I need help in solving this problem, and how you go about finding sin and cos.

    Thank you!
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  2. #2
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    Quote Originally Posted by nikkkk View Post
    Sketch t=3pi/5 on the unit circle.

    What is the reference number for t? I know the reference number is 2pi/5.

    Find to the nearest hundredth: sin t? cos t?
    -How do you find these?

    ... with a calculator

    The terminal point determined by t is : ( , ) ?

    \textcolor{red}{\left(\cos\left(\frac{3\pi}{5}\rig  ht) \, , \, \sin\left(\frac{3\pi}{5}\right)\right)}

    I need help in solving this problem, and how you go about finding sin and cos.

    Thank you!
    .
    Follow Math Help Forum on Facebook and Google+

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