Question

can anyone assist me verifing this identity?

(sinx + tanx)/(cosx+1=tanx

Answer 1

i started by multiplying the numerator and denominator by the conjugate of cosx+1 .... but it does not look right and i dont know what to do next
@precal

Answer 2

ok, I usually recommend to work with the more complex side first. I then recommend to change everything into sines and cosines.

Answer 3

So, the tan function should be changed into sine over cosine

Answer 4

Then you have a sinx + a sinx/cosx

Answer 5

sinx + sinx/cosx that is.

Answer 6

Then find a common denominator. (sinxcosx + sinx)/cosx.

Answer 7

Following so far?

Answer 8

I havn't started working with the cosx + 1 yet, but that is coming up shortly.

Answer 9

@bfinn4 are you there?