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anonymous
 5 years ago
What is the exact value of cos75* cos15*+ sin75* sin15* *=Degrees
anonymous
 5 years ago
What is the exact value of cos75* cos15*+ sin75* sin15* *=Degrees

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0note that cos(a) = sin(90A)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the value is cheddar cheese

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so Cos 75=sin(9075).......... i am being taught with the formulas sin (A+B)= sinA cosB + cosA sinB also cos (A+B)= cosA cosB  sinAsinB.... Do you know that one i know i have to use a 30 45 60 chart of sin cos and tan with raidiacles and franctions and fill in i just dont know how ...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Use the following identity to find the value: \[\cos(AB)=\cos A \cos B+\sin A \sin B\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ah yes, anwar is right, ignore my answer. I spaced out on the identity stuff.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0^^ I am always right :P

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So, what do you think the value would be?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thank you for helping though still :] Hhaha ok now am i right about the chart thing..
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