Question

Prove the Trigonometric Equation
-tan^2x+sec^2x=1

Answer 1

I got up to -1+1/cos^2x

Answer 2

Do you know how to prove sin^ x + cos^ x =1

Answer 3

YES

Answer 4

My bad, had Caps lock on

Answer 5

@No.name Can you help?

Answer 6

So divide it by cos^2 x throoughout you will get it

Answer 7

What? I'm confused divide -1 by cos^2x?

Answer 8

Sec

Answer 9

secx

Answer 10

yup

Answer 11

1/cos^2 x = sec^2 x

Answer 12

-1/sec^2 x = -sec^2 x

Answer 13

How does that help? I changed it to terms of cos and sin