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OpenStudy (anonymous):
Evaluate: a.cos270° b.sec 90° c. cot 90°
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OpenStudy (anonymous):
HINT: 270 degrees is on the negative y-axis Since you're looking for cos(270 degrees), what is the x-coordinate of any point on the y-axis?
OpenStudy (anonymous):
-1
OpenStudy (anonymous):
no... x-coordinate...
OpenStudy (anonymous):
ohhh I see what I did wrong. I was thinking of 180°
OpenStudy (anonymous):
yep... i do that too.... sometimes....
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