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bubblekvas1
@bubblekvas1
August 2022
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cos(a-b)-2sina sinb помогите решить
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metrskepkoyy
Cos(a-b)-2sina*sinb=cosa*cosb+sina*sinb-2sina*sinb=cosa*cosb-sina*sinb= cos(a+b)
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bubblekvas1
спасибо
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