SOLUTION: Help with this problem? I need help on how to work out this problem. Thank you! Use a double- or half-angle formula to determine the value of the trigonometric function. sin(

Question 864341: Help with this problem? I need help on how to work out this problem. Thank you!
Use a double- or half-angle formula to determine the value of the trigonometric function.
sin(27pi/8)
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Help with this problem? I need help on how to work out this problem. Thank you!
Use a double- or half-angle formula to determine the value of the trigonometric function.
sin(27pi/8)
***
Use half-angle formula for sin:

=reference.angle of (3pi/4) in quadrant II

calculator check:
sin(27π/8)≈0-0.9238
exact value=≈-0.9238
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