Question

lim x→0 (cos 5x tan 5x)/x

Answer 1

\[\tan5x=\frac{\sin 5x}{\cos5x}\]
so
\[\cos5x\tan5x=\sin5x\]
\[\lim_{x\to0}\frac{\sin5x}{x}=\lim_{x\to0}\frac{\sin5x}{5x}\cdot5=\cdots \]

Answer 2

Ok I follow the logic thanks for the help

Answer 3

yw