Like tan 3# = 3tan# - tan3#/1 -3tan2#
then how to find tan 4#, tan 5#, tan 6#...........
so we donot hve to memorize it till last
:consider # as thitha angle’
Like tan 3# = 3tan# - tan3#/1 -3tan2#
then how to find tan 4#, tan 5#, tan 6#...........
so we donot hve to memorize it till last
:consider # as thitha angle’