Вариант 2. 1. Вычислите: 2tg + 8cos sin – — 4sin? 4 4. 6 3 л л л л 2. Упростите выражение: а) tg't (1 – sini); б) sin't — cost 3 sin't — cost B) sint sint ; 1+cost 1 - cost sint + tgt 1+ sint • ctgt 3. Решите уравнение: 13 sint 2 «No4. Решите неравенство: 2 cost ​
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