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Mathematics 17 Online
OpenStudy (anonymous):

lim sec x as x approaches 0

myininaya (myininaya):

What does cos(x) approach as x approaches 0?

myininaya (myininaya):

Is cos(x) continuous at x=0? If so, you can use direct substitution. cos(x) and sin(x) are continuous at any real number So what is cos(0)?

OpenStudy (anonymous):

i dont know what cos(x) is

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