Question

Question 8 of 10

The equation tan2x+ 1 = sec2x is an identity.
O A. True
OB. False
Please help me answer this question!!!! thank you!!!

Answer 1

If you meant to write out
`\tan^2(x) + 1 = \sec^2(x)`, then this is an identity. It can be derived from the pythagorean identity
`\sin^2(x)+\cos^2(x) = 1`. Divide every term by
`\cos^2(x)` to end up with the first equation mentioned.