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Помогите пожалуйста срочно!
1)В треугольнике ABC: ∠A = 75 градусов, ∠C = 31 градус
Найдите угол B.
2) В равнобедренном треугольнике ABC, с основанием AC проведена биссектриса AD.
Найдите угол ADC, если ∠B = 40 градусов.

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