Question

-tan^2 (x) + sec^2 (x) = 1

Answer 1

Are we supposed to prove this?

Answer 2

Yes

Answer 3

-tan^2x+1+tan^2x
=1

Answer 4

Well then, I suggest you start with the well known Pythagorean identity....
\[\Large \sin^2(x) + \cos^2(x) = 1\]

Answer 5

sec^2x can be written as 1+tan^2x and t

Answer 6

both the negative na positiv tab^2 x gets cancelled

Answer 7

or draw a triangle and use pythagoras theorem.

Answer 8

@madrockz so how would it look like , I'm more of a visual learner

Answer 9

lets not use pythagorean identity to prove a pythagorean identity...

Answer 10

draw a triangle, right angles
label its sides and angles

Answer 11

right angled triangle*

Answer 12

Oh I see now ,thanks everyone