Question

Simplify cos2 θ(1 + tan2 θ)

Answer 1

sorry thats
tan 2O = sin 2O / cos 2O

Answer 2

yes ok

Answer 3

Oh hold on is that cos two theta or cos theta squared?

Answer 4

cos squared theta

Answer 5

right so we have

cos^2 θ ( 1 + sin^2 θ / cos^2 θ)

= cos^2 θ + sin^2 θ = ?

Answer 6

do you know that last identity?

Answer 7

tan 2 theta?

Answer 8

cos squared theta + sin squared theta = ?

Answer 9

it equals 1

Answer 10

? = some number

Answer 11

1

Answer 12

right thats it

Answer 13

- couldn't be much simpler than 1