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LOLOLOL2222 @LOLOLOL2222

June 2022 1 7 Report

sin(pi/12)cos(11pi/12) + cos (pi/12) sin (11pi/12)

Answers & Comments

burbalka Sin a * cos b + sin b * cos a = sin(a+b)
=> Sin(pi/12)cos(11pi/12) + cos (pi/12) sin (11pi/12) = sin(pi/12 + 11pi/12) = sin pi = 0

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