Limits of Trig functions, let c be a real number in the domain of the given trig function?

1-lim sin x= sin c


x-%26gt; c





2-lim cos x=cos c


x-%26gt;c





3-lim tan x=tan c


x-%26gt;c





4-lim sec x=sec c


x-%26gt;c





5-lim csc x= csc c


x-%26gt; c

Limits of Trig functions, let c be a real number in the domain of the given trig function?
I don't see what there is to do here. Since you know c is in the appropriate domain, and trig functions are continuous on their domains, lim trig(x) as x -%26gt;c is just trig(c). This is true for any value in the domain of a continuous function.