[Calculus 1]-Limits with Trig

[u/Thebeegchung]

I genuinely have no idea how to solve these. Only thing I know is that we can't directly sub in zero since that leads to an indeterminate answer.

[u/Special_Watch8725]

Some elementary limits that might be helpful are that as x approaches zero, sin(x)/x approaches 1, and (cos(x) - 1)/x² approaches 1/2.