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047a1decf2885a568f8edb78a5e21d02_normal @geekasaurusrawr Bankstown, NSW, Australia

Anyone have any ideas?

10:02PM Sat, November 13 2010

15004_386415539494_561764494_4075091_7787364_n_normal @omgshgrace

use unit circle :) cotx = tan(90-x) then use fund. form :)

10:08PM Sat, November 13 2010

anonymous Anonymous

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