help me pls, question is on the picture

Answer:

I just learned this about a few weeks ago I hope this helps.

Step-by-step explanation:

Since it's cosine you're only looking at Adjacent and the hypotenuse which the adj is 20 and the hyp is 25 so since cosine is adj/hyp you do 20/25 then simplify it to 20/25 divide both by 5 so it's simplified to 4/5.

Then you do Cos-1(4/5)=36.869 which is rounded to the tenth 36.9 but rounded to the hundredth 36.87.

Hope this helps

(secx cscx)/(cotx)=sec^2x
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Mrs. Howard is ordering a pizza for the 6th grade
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a) What expression will Mrs. Howard use to find the cost
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b) Find the total cost of the pizza if they ordered 4
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Reports say that the mean birth weight of babies of European heritage is 3.5\text{ kg}3.5 kg3, point, 5, start text, space, k, g, end text. Marta wants to perform a significance test to see if this holds true in her nation. She takes a random sample of babies and observes a mean birthweight of \bar x=3.43\text{ kg.} x ˉ =3.43 kg.X, with, \bar, on top, equals, 3, point, 43, start text, space, k, g, point, end text Here's Marta's null hypothesis: H_0:H 0 ​ :H, start subscript, 0, end subscript, colon The mean birth weight in this nation is...

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o form a line.
O are parallel.
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Theatre A uses 2 cups of salt for
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Theatre C uses 1 cup of salt for every 6 cups of oil.

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