Question

Proving trig equations

Answer 1

Here is the equation. \(\sf - tan2x + sec2x = 1\)

Answer 2

I am thinking I should use \(\sf 1 + tan2u = sec2u\)

Answer 3

Ugh, all of the 2's should be exponents

Answer 4

you mean its
\(-\tan^2 u+\sec^2 u =1 \)
?

Answer 5

Yes

Answer 6

then you're correct :)

Answer 7

O_O

Answer 8

Thanks!

Answer 9

use
\(1+\tan^2 u = sec^2 u\)
and you're done