Posted by Theresa on Friday, April 30, 2010 at 6:40pm.
I really need help so please help.
write the first trigonometric function in terms of the second trigonometric function.
sec x; tan x

Trig.  John, Friday, April 30, 2010 at 6:43pm
think of sec x as 1/cos x.

Trig.  John, Friday, April 30, 2010 at 6:45pm
oops i take that back

Trig.  John, Friday, April 30, 2010 at 6:46pm
big hint: sec x is the hypotenuse of a triangle with legs tan x and 1.

Trig.  Reiny, Friday, April 30, 2010 at 8:09pm
from
sin^2 Ø + cos^2 Ø = 1
divide each term by cos^2 Ø
sin^2 Ø/cos^2 Ø + 1 = 1/cos^2 Ø
tan^2 Ø + 1 = sec^2 Ø
sec Ø = √(tan^2 Ø + 1) 
Trig.  Shayla, Saturday, May 1, 2010 at 1:33am
Thank you, Reiny! It helped me a lot.