Question

Help plz

Answer 1

Prove the trigonometric identity sec x + tan x)((1 – sin x) / cos x) = 1

Answer 2

I am sorry I don't know this

Answer 3

Can someone help will give a medal

Answer 4

Have you thought about multiplying numerator and denominator of the left side by (1 + sin x)?

cos x * (1 + sin x)
--------------------
(1 - sin x)(1 + sin x)

cos x * (1 + sin x)
-------------------
1 - sin^2 x

Now...what is 1 - sin^2 x (from the Pythagorean identities)?

Make the substitution...and reduce the fraction.

Then, see where that takes you.

Answer 5

medal?

Answer 6

So what are my reasons