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ssuunnyy2013
@ssuunnyy2013
July 2022
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Пожалуйста помогите делать эти примеры : 1)2sin(-180)+3cos(-270) 2)2tg(-135)•ctg(-405) 3)3sin750+5cos780-tg405 4)2sin4,5п-ctg2.25п-cos2,5п 5)4cos(-1500)-sin(-750)
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Answers & Comments
bokarev102
1) 2*0 + 3* 0=0
2) 2*(-1)* (-1)=2
3)3*sin 30 + 5*cos60- tg45=3*1+5*1-1=7
4)2*sin90-ctg45-cos90=2*1-1-0=1
5) 4*cos(-60)-sin(-30)=4*1/2+1/2=2+0.5=2.5
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Answers & Comments
2) 2*(-1)* (-1)=2
3)3*sin 30 + 5*cos60- tg45=3*1+5*1-1=7
4)2*sin90-ctg45-cos90=2*1-1-0=1
5) 4*cos(-60)-sin(-30)=4*1/2+1/2=2+0.5=2.5