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OpenStudy (anonymous):
Find the exact value of cos 105degrees without using tables ot a calcultor? be sure to show your work
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OpenStudy (anonymous):
cos (45 + 60) = .....
OpenStudy (anonymous):
Yup, just drops out with a sum formula...
OpenStudy (anonymous):
I'm just lazy....don't feel like doing the rest.
OpenStudy (anonymous):
I guess you could do it (bit longer) with 150-45 as well...
OpenStudy (anonymous):
how about it holly955cheer, you get what we're talking about?
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jhonyy9 (jhonyy9):
cos(45+60)=
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