OpenStudy (anonymous):

Algebra 2 help

4 years ago
OpenStudy (anonymous):

4 years ago
OpenStudy (anonymous):

what unit / lesson

4 years ago
OpenStudy (anonymous):

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

4 years ago
OpenStudy (anonymous):

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

4 years ago
OpenStudy (anonymous):

C for cats.

4 years ago
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