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OpenStudy (anonymous):
given sin theta = 1/3, find tan 2 theta
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hartnn (hartnn):
can you find cos theta, first ? ?
hartnn (hartnn):
or tan theta ?
hartnn (hartnn):
then use tan 2x = (2 tan x)/(1-tan^2 x)
OpenStudy (anonymous):
tan2x=2tanx/1-tan^2x
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