Trig

How can I find the exact value of Sin 480 degrees? Thanks

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asked by Rachal
  1. 480°=360°+120°

    sin(480°)=sin(120°)

    sin(90°+x)=sin(90°-x)

    sin(90°+30°)=sin(90°-30°)

    sin(120°)=sin(60°)

    sin(480°)=sin(120°)=sin(60°)=sqroot(3)/2

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  2. Thank you I see where I got stuck

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    posted by Rachal
  3. Sin(480) = sin (5x90 + 30) = cos 30 = sqrooy(3)/2

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  4. 3/2

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    posted by shobhit

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