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what trig identity is used? (1 Viewer)

P

pLuvia

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Are you sure its not
bsin(@-$)
=b.2sin((@-$)/2)cos((@-$)/2)?
 

ellen.louise

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I think it should be = 2bsin((theta-y)/2)cos((theta-y)/2)

cause then you just use the sin2x = 2sinxcosx
or, in this case, sinx = 2sin(x/2)cos(x/2)
 

bos1234

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ok i understand now

yes it should be sin. sry for that confusion

bye for now
 

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