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Mathematics 14 Online
OpenStudy (anonymous):

#53. cos 2a = cos^2a - sin^2a HINT: WRITE TAN 2A AS TAN (A+A).

OpenStudy (anonymous):

@perl

OpenStudy (anonymous):

@dan815

OpenStudy (anonymous):

@pooja195

OpenStudy (triciaal):

why reopen the same question? did you follow my previous instructions?

OpenStudy (anonymous):

No because I didnt understand even still

OpenStudy (anonymous):

I would have to complete this one inorder to complete #54

OpenStudy (triciaal):

|dw:1453242570627:dw|

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