Question

determine the exact value for sine and cosine of 225°

Answer 1

hmmm what grade r u in???

Answer 2

11 why

Answer 3

hmmmm....give me a minute...im only in ninth

Answer 4

okay

Answer 5

brb

Answer 6

\[\sin (225^{0}) = \sin(180^{0} +45^{0})\]
\[\cos(225^{0}) = \cos180^{0} +45^{0})\]

Answer 7

use the formula of \[\sin(180^{0}+\theta) = - \sin \theta \]
\[\cos(180^{0}+\theta) = - \cos\theta \]

Answer 8

??

Answer 9

yeah sorry dude...im totally lost...id love to help but i just dont know how to do it

Answer 10

okay

Answer 11

sorry