Please help with Trig question!

May 2010
9
0
Please help with sec, cos and tan question?

Hi, I would really appriciate some help with this question. I am confused about how to solve it. Thank you so much!!

Question: Prove the following algebraically:

sec x - sin x tan x= cos x
 
Last edited:

e^(i*pi)

MHF Hall of Honor
Feb 2009
3,053
1,333
West Midlands, England
Hi, I would really appriciate some help with this question. I am confused about how to solve it. Thank you so much!!

Question: Prove the following algebraically:

sec x - sin x tan x= cos x
\(\displaystyle \frac{1}{\cos(x)} - \frac{\sin^2(x)}{\cos(x)} = \frac{1-\sin^2(x)}{\cos(x)}\)

Use the Pythagorean Identity to simplify
 
  • Like
Reactions: Polkadotprincess19