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otez555 [7]
3 years ago
15

The person who can prove this all question will get the brailiest award

Mathematics
2 answers:
MrRa [10]3 years ago
5 0

Answer:

This only has answer 1. these proofs are really long, so hard to fit them all in one answer.

Step-by-step explanation:

cos^2A+sin^2A=1\\ : Will be used very often so just remember this equality.

1. Multiply (1+SinA)*\frac{CosA}{1-SinA} +\frac{CosA}{1+SinA} *(1-SinA)=2secA\\

When we factor out the terms, we are left with:

  • \frac{CosA}{1-Sin^2A} +\frac{CosA}{1-Sin^2A} =2secA

We then use the rule above and convert it to cos^2A:

  • \frac{1}{CosA} +\frac{1}{CosA} =2secA
  • 2secA=2secA
arlik [135]3 years ago
5 0

Answer:

Step-by-step explanation:

Attached

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Medians $\overline{dp}$ and $\overline{eq}$ of $\triangle def$ are perpendicular. if $dp= 18$ and $eq = 24$, then what is ${de}$
monitta
Denote by M the point of  intersection of the medians. 
Denote also the distance DM by x and the distance QM by y. 
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 y=\frac{1}{3}\timesFQ=\frac{1}{3}\times24=8
Also, 
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Since the medians are perpendicular, we deduce that:
x^2+y^2=DQ^2\iff DQ=\sqrt{8^2+12^2}=14.4
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4 years ago
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Find the surface area of the cone
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3 years ago
yler and Bethany have 240 feet of fencing with which to build a garden. Tyler wants the garden to be in the shape of a square, w
Sidana [21]
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4 0
3 years ago
Help with 9 and 10 and show your work plz and thanks
worty [1.4K]
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for number 10 we use the same idea. we know that 20 percent of people are for the visiting team so the rest of the pie chart would mean 80 percent of people were for the home team. We take the total number of people  which is 64,000 and multiply our 80 percent, so we move the decimal
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8 0
3 years ago
Freddy has a shelf that is 72 over 5 inches wide. How many catalogs can Freddy arrange on the shelf if each catalog is 4 over 5
andrew-mc [135]
<h2>Answer:</h2>

Option: D is the correct answer.

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<h2>Step-by-step explanation:</h2>

Let Freddy could arrange n catalogs on the shelf.

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72 over 5 inches wide.

The dimension of the catalog is:

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n × Dimension of one catalog=Dimension of shelf.

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n=18

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7 0
4 years ago
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