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palamarchuk196
@palamarchuk196
August 2022
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sin β + 2 cos β + 3 tg β , якщо β = 30 градусів
2 sin 60 градусів × cos 60 градусів
sin α + cos ( α - β ) , якщо α = 90 градусів β = 30 градусів
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Verified answer
1)sin30+2cos30+3tg30=1/2+2*√3/2+3*√3/3=1/2+√3+√3=1/2+2√3
2)2sin60*cos60=2*√3/2*1/2=√3/2
3)sin90+cos(90-30)=sin90+cos60=1+1/2=1,5
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Verified answer
1)sin30+2cos30+3tg30=1/2+2*√3/2+3*√3/3=1/2+√3+√3=1/2+2√32)2sin60*cos60=2*√3/2*1/2=√3/2
3)sin90+cos(90-30)=sin90+cos60=1+1/2=1,5