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OpenStudy (anonymous):
Name one x value where the graph of y = cos x crosses the x axis. A. 0 B. 90 C. 180 D. 45
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OpenStudy (anonymous):
cos 0=1...that crosses the x axis
OpenStudy (anonymous):
so its A
OpenStudy (anonymous):
hold on a sec....cos 45=0.7071...that also crosses the x axis
OpenStudy (anonymous):
cos 180 is -1 while cos 90 is 0
OpenStudy (anonymous):
am thinking 90...not so sure what exactly d question is asking for
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OpenStudy (anonymous):
what would you pick
OpenStudy (anonymous):
B.90 @Tblack
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