SOLUTION: use the reference angle theorem to find the exact value of each trigonometric value. 1. sin 225 degress 2. cos 300 degrees

Algebra ->  Trigonometry-basics -> SOLUTION: use the reference angle theorem to find the exact value of each trigonometric value. 1. sin 225 degress 2. cos 300 degrees      Log On


   



Question 906725: use the reference angle theorem to find the exact value of each trigonometric value.
1. sin 225 degress 2. cos 300 degrees

Answer by lwsshak3(11628) About Me  (Show Source):
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use the reference angle theorem to find the exact value of each trigonometric value.
1. sin 225 degress 2. cos 300 degrees
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sin 225˚=sin (225-180)=sin 45˚=√2/2
cos 300 ˚=cos (360-300)=cos 60˚=1/2