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Mathematics 20 Online
OpenStudy (anonymous):

HELP WILL GIVE MEDAL

OpenStudy (anonymous):

OpenStudy (sohailiftikhar):

180

OpenStudy (sohailiftikhar):

look at the angle between f and f'

OpenStudy (sohailiftikhar):

get it or not ?

OpenStudy (sohailiftikhar):

you there ?

OpenStudy (anonymous):

hey sorry

OpenStudy (anonymous):

@sohailiftikhar

OpenStudy (anonymous):

so, its b?

OpenStudy (sohailiftikhar):

yes

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