Question

MEDALS!Which expression is equivalent to (1 – sin^2 x)(sec x)?
sec^2 x
tan x
tan^2 x
cos x
cos^2 x

Answer 1

are you familiar with wolfram alpha?

Answer 2

nope

Answer 3

its a random online thingy they dont teach

Answer 4

You can change \(\large (1-sin^2 x)\) into \(\large cos^2 x \) and change \(\large sec x \) into \(\large \frac{1}{cosx} \). That should help .

Answer 5

they don't but you can see how to simplify things

Answer 6

Use sin² x + cos² x = 1 → so replace 1 - sin² x with cos² x

and sec x = 1 / cos

so (1 - sin² x)(sec x) = (cos² x) * (1 / cos x)

= cos x →→ so choice is ?

Answer 7

d`?

Answer 8

is it d?

Answer 9

no

Answer 10

idk then e?

Answer 11

yes it's d ..sorry i thought d was the last one

Answer 12

oh thanks