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vekshin1
3 years ago
7

PLEASE HELP ASAP TRIGONOMETRY

Mathematics
1 answer:
otez555 [7]3 years ago
5 0

Answer:

11). x = 25.8°

12). x = 67.3°

Step-by-step explanation:

11). By using sine rule in the given triangle,

   cos(x) = \frac{\text{Adjacent side}}{\text{Hypotenuse}}

   cos(x) = \frac{27}{30}

   x = \text{cos}^{-1}(\frac{9}{10} )

   x = 25.84

   x ≈ 25.8°

12). By applying tangent rule in the given triangle,

    tan(x) = \frac{\text{Opposite side}}{\text{Adjacent side}}

    tan(x) = \frac{43}{18}

    x = \text{tan}^{-1}(\frac{43}{18} )

    x = 67.29°

    x ≈ 67.3°  

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arlik [135]
I hope this helps you



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4 0
3 years ago
drew bought a chemistry book for $30. later that book was marked down by 20%. what was the cost of the book with the discount?
drek231 [11]

Answer:

It would be 6 dollars

Step-by-step explanation:

20 percent of 30 dollars is 6 dollars.

If an item costs 30 dollars and it's on sale for 20 percent off, how much will you save? To figure this out, you need to find 20 percent of 30.

This is easy to do in your head. Think of what 10 percent would be. 10 percent of 30 would be the same as .10 x 30, or 3. So, 10 percent off is 3 dollars off.

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20 percent of 30 dollars would be 6 dollars.

3 0
3 years ago
What is being done to the variable in the equation y + 8.5 = 17.2?
olganol [36]
<span>The number 8.5 is being added. </span>
3 0
3 years ago
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What is the answer to 90+8
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2 years ago
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Speedometer has a percent error of 10%. The actual speed of the car is 40 mph.
gulaghasi [49]

Answer = 36.0 mph



As per the question,



Actual speed of the car = 40 mph.


Speedometer has a percent error of 10%.


The error can be negative as well as positive.


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5 0
3 years ago
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