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charle [14.2K]
3 years ago
9

PLZZZ HELP will mark brainleist

Mathematics
1 answer:
Mashcka [7]3 years ago
8 0
The answer would be 25.12 circumstance equals 2(3.14)r so the inner circle would be 2(3.14)2=12.56 and the whole circle would equal 2(3.14)6=37.68. You subtract 37.68-12.56=25.12
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A lighthouse keeper has a 10 degrees angle of depression between the horizontal light beam and the line of sight from the ship.
Andrei [34K]
107.75m
This is a trigonometric ratio problem. the angle of depression (10) is opposite the height (19m) and the distance is adjacent to the distance (x). opposite ad adjacent sides to the angle is a tangent problem.
tan \theta = \frac{opp}{adj}
plus in values, we know.
tan (10) = \frac{19}{x}
switch tan(10) and x using the products property.
x = \frac{19}{tan (10)}
plug in to calulator to get answer
x=107.75

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Natalka [10]
The answer is answer B!
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Mark brainliest please


Hope this helps you
8 0
2 years ago
HELP!!!!<br><br> I need an answer soon, please!!!<br><br> I will give Brainliest!!!!
sattari [20]

Answer:

180

Step-by-step explanation:

In this drawing I made, I added some variables. a and d are complimentary, meanwhile b and c are complimentary. A straight line is an angle of 180 degrees. Therefore, a + b = 180.

7 0
3 years ago
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