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Ронька24
@Ронька24
July 2022
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ТРИГОНОМЕТРИЯ
СРОЧНО!!!!
sin((7π)/12)*cos((7π)/12)
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Universalka
Verified answer
Sin (7П/12) * Cos (7П/12) = 1/2 * 2 *Sin(7П/12)Cos(7П712) = 1/2 Sin(7П/6) =
= 1/2 Sin(П + П/6) = - 1/2SinП/6 = - 1/2 * 1/2 = - 1/4 = - 0,25
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Sin (7П/12) * Cos (7П/12) = 1/2 * 2 *Sin(7П/12)Cos(7П712) = 1/2 Sin(7П/6) == 1/2 Sin(П + П/6) = - 1/2SinП/6 = - 1/2 * 1/2 = - 1/4 = - 0,25