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Fed [463]
3 years ago
10

Use trigonometric identities to simplify the expression. 1/cot^2(B) +1.....the B represents the symbol of beta.

Mathematics
1 answer:
Reil [10]3 years ago
4 0

1 \div ( \cot ^{2} ( \beta )  + 1) \\  = 1  \div  \ \csc  ^{2} ( \beta )  \\  =  \sin^{2} ( \beta )

As

cosec^1/2 (B)- cot^1/2(B)=1

so cosec^1/2(B)= 1+ cot^1/2 (B)

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Hii! please help asap. i’ll give brainliest
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Answer:

B) both mean and median

Step-by-step explanation:

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3 years ago
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The brand manager for a brand toothpaste must plan a campaign designed to increase brand recognition. He wants to first determin
bulgar [2K]

We need to find out how many adults must the brand manager survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage.

From the given data we know that our confidence level is 90%. From Standard Normal Table we know that the critical level at 90% confidence level is 1.645. In other words, Z_{Critical}=1.645.

We also know that E=5% or E=0.05

Also, since, \hat{p} is not given, we will assume that \hat{p}=0.5. This is because, the formula that we use will have \hat{p}(1-\hat{p}) in the expression and that will be maximum only when \hat{p}=0.5. (For any other value of \hat{p}, we will get a value less than 0.25. For example if, \hat{p} is 0.4, then 1-\hat{p}=0.6 and thus, \hat{p}(1-\hat{p})=0.24.).

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We will now substitute all the data that we have and we will get

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3 0
3 years ago
Lf g(x) = x3 - 5 and h(x) = 2x - 2, find g(h(3)).
White raven [17]

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Step-by-step explanation:

Well if its x^3 I assume it is because you wrote other coefficients before the variable.

2(3) - 2 = 6-2 = 4

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3 years ago
63 student has to be 4 student in each group who won’t be in a group
alina1380 [7]

Answer:

15×4=60 and 3 people will be left without a group of 4

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Each student at some college has a mathematics requirement M (to take at least one mathematics course) and a science requirement
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all students = 150

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(c) Neither requirement:

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8 0
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