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Mathematics 16 Online
OpenStudy (anonymous):

Complete the identity...

OpenStudy (anonymous):

OpenStudy (psymon):

\[\cos(a-b) = \cos(a)\cos(b) + \sin(a)\sin(b)\] That's a start.

OpenStudy (anonymous):

ty @Psymon

OpenStudy (anonymous):

@Coolsector can u confirm im right? 1 + tan α tan β

OpenStudy (anonymous):

or @Psymon

OpenStudy (psymon):

That's what it looks like to me.

OpenStudy (anonymous):

yes

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