verify : [sec(x) / csc(x) - cot(x)] - [sec(x) / csc(x) + cot(x)] = 2csc(x)
trig - MathMate, Sunday, January 2, 2011 at 5:24pm
Use the following identities to express everything in sin(x), cos(x), tan(x) and cot(x):
Unless there is a typo on the right-hand-side, I find the given identity not true.
trig - briana, Sunday, January 2, 2011 at 6:44pm
i put it in my graphing calculator, though, and they graph the same function
trig - MathMate, Sunday, January 2, 2011 at 8:13pm
This is why I suspected there is a typo.
The left-hand-side evaluates to -2csc(x).
The right-hand-side, 2*csc(x).
I suggest you recheck the expressions posted.
Here's a plot of each side of the identity as posted.
trig-correction - MathMate, Sunday, January 2, 2011 at 8:15pm
The left-hand-side evaluates to -2cot(x).