July 2022 1 3 Report

ПОЖАЛУЙСТА ПОМОГИТЕ.

1.найдите sinα если cosα= -2/3 

2.найдите cosα если sinα= 1/4

полное решение пожалуйста.

3. постройте угол A если:

а) sinA=2/3

б) cosA=3/4

полное решение и чертёж пожалуйста.

   
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