Question

CAN SOMEONE ANSWER THIS QUESTIOM 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

u meant - tan^2 x + sec^2 x = 1 ??

Answer 2

yes sorry

Answer 3

ok, use the identity : sec^2 x = tan^2 x + 1
now, apply it to left side.

Answer 4

i got it down to [-sin^2 x +1]/cos^2x but i dont know where to go from there

Answer 5

ohh, different by my way.
remember the identity : sin^2 x + cos^2 x = 1, so 1-sin^2 x = cos^2 x

Answer 6

can you just show me step by step how to do it? im so confused

Answer 7

i think u almost finishing, just the last step :
convert [-sin^2 x +1] = cos^2 x
so, [-sin^2 x +1]/cos^2 x = cos^2 x/cos^2 x = 1 right ?

Answer 8

yes, thank you so much!

Answer 9

welcome