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alinaalexeeva1
@alinaalexeeva1
December 2021
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Помогите, пожалуйста, с решением 4 задания!!!
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Гоша68
Verified answer
2. 14cos2a=14(1-2sin^2a)=14(1-2*1/4)=14*1/2=7
3. (3-4tga)/(4tga+6)
4.15sina+9cosa+6=11sina+5cosa+6
4sina=-4cosa
tga=-1
5. -2tg(2П+y)=-2tg(y)
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Answers & Comments
Verified answer
2. 14cos2a=14(1-2sin^2a)=14(1-2*1/4)=14*1/2=73. (3-4tga)/(4tga+6)
4.15sina+9cosa+6=11sina+5cosa+6
4sina=-4cosa
tga=-1
5. -2tg(2П+y)=-2tg(y)