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OpenStudy (anonymous):
sin thita = 4/5 , cot2 thita=?
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OpenStudy (anonymous):
@sachinbaba
OpenStudy (anonymous):
HI
OpenStudy (anonymous):
|dw:1418322082620:dw|
OpenStudy (anonymous):
from the figure you can easily get the value of cos thita
OpenStudy (anonymous):
then cot2thita=cos 2thita/sin 2thita=(1-2sin ^2 thita)/2sin thita cos thita
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