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nadiarose6366
04.02.2020 •
Mathematics
If cota=5/12 evaluate 2sina-3cosa/4sina-9cosa
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Ответ:
Cot(a)=cos(a) / sin(a)
Cos(a)=5
Sin(a)=12
2sina-3cosa / 4sina-9cosa
2(12)-3(5) / 4(12)-9(5)
24-15 / 48-45
9/3
3
Ответ:
The height of cuboid is 3 cm
Step-by-step explanation:
Total surface area of cuboid =![2lb+2bh+2hl](/tpl/images/0393/4022/b5448.png)
Length of cuboid = 10 cm
Width of cuboid = 2 cm
Let the height be x
Total surface area of cuboid =![2(10)(2)+2(2)(x)+2(x)(10)](/tpl/images/0393/4022/e7dbb.png)
Total surface area of this cuboid is 112 cm squared
Hence the height of cuboid is 3 cm