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Mathematics 8 Online
OpenStudy (anonymous):

Please help me @ganeshie8 @sidsiddhartha

OpenStudy (anonymous):

cos^4(pi/8)+cos^4(3 pi/8)+cos^4(5 pi/8)+cos^4(7 pi/8)

OpenStudy (anonymous):

I got it

OpenStudy (anonymous):

hehe

OpenStudy (sidsiddhartha):

great :) smart kid :P

OpenStudy (anonymous):

I am stuck on a step

OpenStudy (anonymous):

Cool got it ,

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