Question

sec^2theta-tan^2theta=? explanation please

Answer 1

sec^2(x) - tan^2(x) = 1/cos^2(x) - sin^2(x)/cos^2(x)

= 1-sin^2(x)/cos^2(x) 1-sin^2(x) = cos^2(x) =>

from { cos^2(x) + sin^2(x) = 1 }

= cos^2(x)/cos^2(x)

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

Answer 2

Thankyou :)

Answer 3

best of Luck

Answer 4

sec(x) = 1/cos(x) ; tan(x) = sin(x) / cos(x)

sin^2(x) + cos^2(x) =1 => cos^2(x) = 1 - sin^2(x)

Answer 5

^ what did you just write? the answer is still 1 correct?

Answer 6

nevermind i got it