Question

Need help with Calculus limits
Question in responses

Answer 1

\[ \lim_{h \rightarrow 0} \frac{ 2\tan(\frac{ \pi }{ 4}+h )-2\tan(\frac{ \pi }{ 4} )} { h }\]

Answer 2

There is a trig formula for tan (a + b). Please find that formula, and then apply it to the first tangent term in your numerator.

Answer 3

Example: sin(30+45) = sin 30 cos 45 + cos 30 sin 45.

Answer 4

https://www.google.com/search?sourceid=chrome-psyapi2&ion=1&espv=2&es_th=1&ie=UTF-8&q=sum%20formula%20for%20tangent%20function&oq=sum%20formula%20for%20tangent%20function&aqs=chrome..69i57.6680j0j7