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marktkachenko
@marktkachenko
March 2022
1
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Помогите пожалуйста .
чему равны значения выражения
cos180 градусов x cos60 градусов +2 sin 45 градусов
cos П/3 - sin П/6 + 5 ctg П/4 - 5sin П/2
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kimekaterina99
Первое:
-1 × 1/2 + √2/2 = -1/2 + √2/2= (√2-1)/2
Второе:
1/2 - 1/2 + 5×1 - 5×1 =0
5 votes
Thanks 15
marktkachenko
Благодарю
kimekaterina99
Поставь пожалуйста "лучший ответ")
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Answers & Comments
-1 × 1/2 + √2/2 = -1/2 + √2/2= (√2-1)/2
Второе:
1/2 - 1/2 + 5×1 - 5×1 =0