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Naddika [18.5K]
4 years ago
11

Trigonometry help please

Mathematics
1 answer:
Paha777 [63]4 years ago
5 0
Well use the trig function sin to help.

sin(x) = 6/10 = .6

Then use inverse sign to figure out x. 

x = sin^-1(.6) = 36.87 degrees.

Because angle B is not actually 90 those 5 degrees will make angle C larger than 36.87 degrees.
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Step-by-step explanation:

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What is the value of f(−1) when f(x)=2x+2 ?<br><br><br> Enter your answer in the box.<br><br> f(-1)=
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The greater of is 7 more than the lesser. three times the greater number is 5 more than r4 times the lesser number. Find the num
Ilya [14]
<h2>Steps:</h2>

(Let x = greater number and y = lesser number)

So this question is asking us for a system of equations. Using the info they provide, we can form these two equations:

x=y+7\ \textsf{("The greater of the numbers is 7 more than the lesser.")}\\3x=4y+5\ \textsf{("Three times the greater number is 5 more than 4 times the lesser number.")}

So for this, we will be using the substitution method. Since we know that x = y + 7, substitute x with (y + 7) in the second equation as such:

3(y+7)=4y+5

From here we can solve for y. Firstly, distribute 3 so that it multiplies with y and 7:

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Next, subtract 3y on both sides of the equation:

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Lastly, subtract 5 on both sides of the equation:

16=y

Now that we know the value of y, we can substitute it into either equation to solve for x:

x=16+7\\x=23\\\\3x=4(16)+5\\3x=64+5\\3x=69\\x=23

<h2>Answer:</h2>

<u>In short, 16 is the lesser number and 23 is the greater number.</u>

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