Question

Algebra 2 help

Answer 1

what unit / lesson

Answer 2

The answer would be C.
Since \[\cos 135 = - \cos 45\]
Which is nothing but \[\frac{ - \sqrt{2} }{ 2 }\]

Answer 3

And similarly,
\[\sin 135 = Sin 45\]
Which is equal to \[\frac{\sqrt{2}}{ 2 }\]

Answer 4

C for cats.