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LenKa [72]
3 years ago
15

29.87 × 1.089 show work

Mathematics
1 answer:
ankoles [38]3 years ago
8 0
52.22583 srry I couldn’t show work I was In a hurry to go somewhere
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The central angle of a sector is 100° and the radius of the circle is 17 yds. What is the area of the sector to the nearest tent
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Answer:

9

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3 0
2 years ago
Find the value of sin(a/2) if cosa= 12/13<br>​
daser333 [38]

Answer: sin\frac{a}{2} = ± \frac{1}{\sqrt{26} }

Step-by-step explanation:

We very well know that,

cos2A=1−2sin²A

⟹ sinA = ±\sqrt{(1-} \frac{cos2A}{2} )

As required,  set A = \frac{a}{2}   &   cos a=  \frac{12}{13}    ,thus we get

sin \frac{a}{2} =± \sqrt{\frac{1-cos a}{2} }  

∴ sin\frac{a}{2} =±\sqrt{\frac{1-\frac{12}{13} }{2} } = ± \frac{1}{\sqrt{26} }

   since ,360° < \frac{a}{2} <450°

             ,180° < \frac{a}{2} <225°

Now, we are to select the value with the correct sign. It's is obvious from the above constraints that the angle a/2 lies in the III-quadrant where 'sine' has negative value, thus the required value is negative.

hope it helped!

   

5 0
3 years ago
Simplify the following ratios:
jenyasd209 [6]
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6 0
3 years ago
Share 60 in the ratio 5 7
nignag [31]
If the ratio is 5:7 then the each part has a value of:

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7 0
3 years ago
Order from least to greatest 5 1/2, 5.05, 5 5/9
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so the order from smallest to biggest is 
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6 0
3 years ago
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