Mathematics, 08.12.2020 23:10, milagritomiracle

which expression is equivalent to sin(pi/12)cos(7pi/12)-cos(pi/12)sin (7pi/12)? a) cos(-pi/2) b) sin(-pi/2) c) cos(2pi/3) d) sin(2pi/3)

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which expression is equivalent to sin(pi/12)cos(7pi/12)-cos(pi/12)sin (7pi/12)? a) cos(-pi/2) b) sin...

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