Question

removed

Answer 1

\[\tan \theta=\sin \theta \]
\[\frac{ \sin \theta }{ \cos \theta }=\sin \theta =\frac{ \sin \theta }{ 1 }\]
\[\cos \theta=1,\theta=?\]

Answer 2

2pi?

Answer 3

correct
Actually \[\theta=2 n pi \]
where n is an integer,here n=1

Answer 4

Woot! medal and fan for you :)