Question

sec^4 theta -sec^2 theta is equal to

Answer 1

cos^2 theta-cos^4 theta is it right?

Answer 2

@dumbcow

Answer 3

no they are not equal you can tell just by plugging in any angle

Answer 4

what are you trying to do? simplify "sec^4 -sec^2 " ?

Answer 5

\[\sec^4(\theta) - \sec^2(\theta) \implies \sec^2(\theta)[\sec^2(\theta) -1 ] \implies \sec^2(\theta) \cdot \tan^2(\theta)\]

Answer 6

Or:\[\frac{1}{\cos^2(\theta)} \cdot \frac{\sin^2(\theta)}{\cos^2(\theta)} \implies \frac{\sin^2(\theta)}{\cos^4(\theta)}\]