Grazes
Evaluate:
a.cos270°
b.sec 90°
c. cot 90°



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ByteMe
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HINT: 270 degrees is on the negative yaxis
Since you're looking for cos(270 degrees), what is the xcoordinate of any point on the yaxis?

Grazes
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1

ByteMe
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no... xcoordinate...

Grazes
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ohhh I see what I did wrong. I was thinking of 180°

ByteMe
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yep... i do that too.... sometimes....