OpenStudy (anonymous):

Solve for all: f(x)= cos 2x (a) f(0) (b) f(- π/4) (c) f( π/3)

5 years ago
OpenStudy (anonymous):

So what is cos (2 times 0)?

5 years ago
OpenStudy (anonymous):

what is cos(2 times -pi/4)

5 years ago
OpenStudy (anonymous):

Any ideas?

5 years ago
OpenStudy (anonymous):

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5 years ago
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