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Mathematics 15 Online
OpenStudy (anonymous):

help with questions 4-8 and 10 http://locker.palcs.org/~jbaskwill/pc/5-4practice.pdf

OpenStudy (dumbcow):

Question 4: use property sin2x = 2 sinxcosx Factor out 2cosx Resulting in 2cosx(1+sinx)=0

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