Question

нужно срочно решить уравнения!

1. cos 2x + 1 = 0

2. sin 3x = 0

3. 2sin 2x + 1 = 0

4. -

5. tg 3x - 1 = 0

 

Answer 1

1. cos 2x + 1 = 0

x=П/2+Пk

2. sin 3x = 0

x=Пk/3

3. 2sin 2x + 1 = 0

x=-П/12+Пk

x=-5П/12+Пk

4. -

5. tg 3x - 1 = 0

x=П/12+Пk/3