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OpenStudy (anonymous):
Evaluate: sin54degrees cos9degrees - cos54degrees sin9degrees Value is: a. sqrt2 b. sqrt2/2 c. 0.8910 d. 0.4540
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OpenStudy (anonymous):
0.8509 doesn't match up with the options :/
OpenStudy (shane_b):
Your calculator must be broken :)
OpenStudy (shane_b):
You should get 0.7071067812 which is sqrt(2)/2
OpenStudy (anonymous):
Oh. *Embarassing* :/ Haha THANKS
OpenStudy (shane_b):
It looks like you were in radian mode and not degree mode.
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OpenStudy (shane_b):
No problem :)
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