Ответ: 1 /2 .
Объяснение:
cos120°-tg 315°= cos( 180°- 60°) - tg( 360°- 45°) = - cos60° + tg45° =
= -1/2 + 1 = 1/2 .
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Ответ: 1 /2 .
Объяснение:
cos120°-tg 315°= cos( 180°- 60°) - tg( 360°- 45°) = - cos60° + tg45° =
= -1/2 + 1 = 1/2 .