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...Limits trigonometric functions when calculating trig remember to consider the following still plug in x value first if you get a numerical answer that is your limit after plugging means there hole and like other problems with holes because we cannot factor cancel into what function left factoring will look at several of these situations see pattern can use or then vertical asymptote dne all basic have asymptotes go opposite directions around not pursue which direction graph heading unless squared absolute valued lim sinx sin cosx cscx secx tan cot let s take example plugged know this picture determine y are looking for it appears values approaching now examine graphs give their do notice about coefficients sinax bx does work cos similar on always tanx also works one famous show up lot but here could something called squeeze theorem just mixed thing number split each piece add together multiply limxsecx limcosx be careful golden rule limsinx...