Question

Verify each trigonometric equation by substituting identities to match the right hand side of the equation to the left hand side of the equation
-tan2x + sec2x = 1

Answer 1

hmm \(\bf -tan(2x) + sec(2x) = 1\qquad or\qquad -tan^2(x) + sec^2(x) = 1\quad ?\)

Answer 2

the second one!

Answer 3

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

-sin^2(x)/cos^2*x) + 1/cox^2(x) = 1
[1 - sin^2(x)]/cos^2(x) = 1
cos^2(x)/cos^2(x) = 1
1 = 1

Answer 4

Thank you so much!