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xeze [42]
3 years ago
6

Use the triangle below and the given trigonometric ratio to determine which angle in the triangle below is

Mathematics
1 answer:
4vir4ik [10]3 years ago
7 0
Cosine is the ratio of the adjacent side to the hypotenuse.

In short, we have this equation
cos(angle) = adjacent/hypotenuse

In the case of cos(A) = 18/19.5 we can see that
adjacent = 18
hypotenuse = 19.5

The side of 18 cm is next to angle 2, so the 18 cm side is adjacent to angle 2 (in contrast, the 7.5 cm side is the opposite leg in relation to angle 2)

So that's why the answer is angle 2
In other words, replace the '2' angle marker with 'A' to be able to write cos(A) = 18/19.5
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43% of a sample of 100 visitors to a national park believes that additional funds should be used to preserve endangered species.
IrinaVladis [17]

Answer:

A. 9.7%

Step-by-step explanation:

margin of error:

z * \sqrt{\frac{p(1-p)}{N} }

n is sample size

z is the z score (for a 95% confidence interval you would use 1.96)

p is the sample proportion

to solve for 'p', remember that if a decimal value is given, use that. but if it is a whole number, then divide that number by the sample size, and substitute it into the formula.

in this case we are given 43% so 0.43.

in the formula :

1.96 * \sqrt{\frac{0.43(1-0.43)}{100} }

if you calculate this you get around 0.09703 this is 9.7%

7 0
2 years ago
HELP<br> HELP<br> HELP<br> HELP<br> 5TH GRADE MATH
Natasha_Volkova [10]

Answer:

G 3cubic centimetre

Step-by-step explanation:

7 0
3 years ago
Question 1 (Essay Worth 2 points) A scale on a map shows that 2 inches = 25 miles. Part A How many inches on the map represents
xeze [42]
How do we get 25 to 60?
25x=60
x=60/25
x=12/5
x=2.4
So if 25*2.4= 60
If you multiply 2 inches by the same then you'll get the same amount in inches
Hope this helps!
If you still don't understand message me
If you do understand plz brainlest me
Thank you !!!
7 0
3 years ago
Which statement describes the graph?
iren [92.7K]

Answer:

hmm maybe 1?

Step-by-step explanation:

7 0
2 years ago
Solve. Find all solutions in [0,2).5 secx cotx+5 secx+ cotx+1=0
Dmitrij [34]
\begin{gathered} 5sec(x)cot(x)+5sec(x)+cot(x)+1=0 \\ Factoring \\ (cot(x)+1)(5sec(x)+1)=0 \\ cot(x)+1=0 \\ cot(x)=-1 \\ x=cot^{-1}(1) \\ x=\frac{3\pi}{4} \\  \\ 5sec(x)+1=0 \\ 5sec(x)=-1 \\ sec(x)=\frac{-1}{5},\text{ there is no solution} \\ Hence \\ All\text{ solution are }\frac{3\pi}{4}+\pi n,\text{ where n=1,2,3...} \\  \\  \end{gathered}

5 0
1 year ago
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