hello I'm needing to simplify these two problems
cos^4(x)-sin^4(x)
--------------------
cos^2(x)-sin^2(x)
using pythagareom identity I've deduced the denominator should be
cos^2(x) -1 = -sin^2(x)
but as for the top i'm lost
looking at my choices of ansers I'm guessing it should be 2Cos^2(x) -1 since the top is twice the exponent as the bottom but i'm not sure.
the other one is
csc(x)
------------
tan x + cot x
I'm not even sure what identitity to look for in this one any ideas would be great!
Thank you.
cos^4(x)-sin^4(x)
--------------------
cos^2(x)-sin^2(x)
using pythagareom identity I've deduced the denominator should be
cos^2(x) -1 = -sin^2(x)
but as for the top i'm lost
looking at my choices of ansers I'm guessing it should be 2Cos^2(x) -1 since the top is twice the exponent as the bottom but i'm not sure.
the other one is
csc(x)
------------
tan x + cot x
I'm not even sure what identitity to look for in this one any ideas would be great!
Thank you.