Question

HELP ME PLZ IMA CRY

Answer 1

Awhh noo! why you gunna cry? maybe i can helps you :3

Answer 2

this math is so hard :(

Answer 3

i missed 6 questions

Answer 4

I'm sorry :( what is a problem i could help you with?

Answer 5

homework or test?

Answer 6

use an angle sum identify to verify the identity \[\cos 2\theta = 2 \cos^2 \theta - 1.\]

Answer 7

Lol dude i'm in Geometry right now, im sorry i wont be able to help you X_x

Answer 8

:(

Answer 9

cos(2x) = cos^2(x) - sin^2(x) = 2 cos^2(x) - 1 = 1 - 2 sin^2(x)
http://www.math.com/tables/trig/identities.htm

Answer 10

honestly i have no idea what this is they put trig in my algebra 1

Answer 11

I can help!