Posted by berhana on .
if you can't help me with my first question hopw you can help me with this one.
sec(x)/csc(x)=tan(x)
thanx to anyone who can help
From the definition of the sec and csc functions, and the tan function,
sec(x)/csc(x) = sin(x)/cos(x)
= tan(x)
However, tan (x) does not equal tan (x). They have opposite signs
Are you sure you copied the problem correctly?

more trig.... how fun!!!! 
Tan 4x is equal to below answer,
4 tan x[1tan square x] the whole divided by 16 tan square x+tan4 x