помогите пожалуйста срочно)

1 а).sin x= -1. б)cos x= √ 2 /2. в)tg x= -√3/

2.а)cos^2x - cosx - 2=0 б)3cos^2x- 2sinx+2=0

3.а)sinx+cosx=0 б)3sin^2x- 2√3sinxcosx+cos^2x=0.

4.а)cosx= -0,5. б)sinx=1/4 в)tgx=2

5.a)sinx-cosx=1 б)tgx=2

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