Question

verify each idenity

Answer 1

@Directrix

Answer 2

I do not know the double angle formula for secant. We can use the reciprocal of the double angle formula for cosine, though.

Answer 3

okay, one moment

Answer 4

what would be the reciporacal of that

Answer 5

Look up the double angle formula for cosine.

Answer 6

\[\cos^2\theta- \sin^2\theta]

Answer 7

cos^2x-sin^2x

Answer 8

Right.

Answer 9

so what would be reciprocal of that?

Answer 10

Let's leave that over that for the moment.

Do you know the right trig formula that relates sec^2 x and tan^2 x

Answer 11

1+tan^2x=sec^2x

Answer 12

See attachment.

Answer 13

Fill this in with what sec^2x equals