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please................................................
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Bishal Raj Panda , 7 Years ago
Grade 12
anser 1 Answers
Arun
Dear student
 
9.
 
Sin (1080 pi - 2*pi/3)
 
 = - sin (2*pi/3)
 
 = - sin ( pi/2 + pi/6)
 
 = - cos (pi/6) = - sqrt(3) /2
Last Activity: 7 Years ago
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