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Andrej [43]
2 years ago
12

Prove this identity sin(2A)=2sinAcosA.

Mathematics
1 answer:
34kurt2 years ago
7 0
The solution for proving the identity is as follows:

sin(2A) = sin(A + A) 
As sin(a + b) = sinacosb + sinbcosa, 
<span>sin(A + A) = sinAcosA + sinAcosA 
</span>
<span>Therefore, sin(2A) = 2sinAcosA

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your inquiries and questions soon. Have a nice day ahead!
</span>

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Which of the following best represents the highest potential for nonresponse bias in a sampling strategy? Describe why this opti
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Answer:

c. Asking people leaving a local election to take part in an exit poll

Step-by-step explanation:

Asking people leaving a local election to take part in an exit poll best represents the highest potential for nonresponse bias in a sampling strategy because of the importance of the local election compared to the exit polls.

It is worthy of note that nonresponse bias occurs when some respondents included in the sample do not respond to the survey. The major difference here is that the error comes from an absence of respondents not the collection of erroneous data. ...

Oftentimes, this form of bias is created by refusals to participate for one reason or another or the inability to reach some respondents.

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3 years ago
find a parametric representation of the solution set of the linear equation. (enter your answer as a comma-separated list of equ
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To represent the solution set of a linear equation parametrically, we introduce other parameters like s and t for the free variables.

Every linear equation has n - 1 free variables where n is the number of variables.

For x + y + z = 2, we have 3 variables and 3 - 1 = 2 free variables.

First, let y and z be the free variables, we first solve the linear equation for x to get:

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Therefore , the parametric representation of the solution set is given by :

x = 2 - s -t

y = s

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F(x)=x3 and g(7) = 982

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4 0
3 years ago
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Answer:

x^2+y^2=16

Step-by-step explanation:

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x^2+y^2=16

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