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disa [49]
2 years ago
5

Find the value of ( 1+cosA) (1-cosA)

Mathematics
1 answer:
Mandarinka [93]2 years ago
3 0

Answer:

sin^2 A

Step-by-step explanation:

first expand the trigonometry

1(1-cosA)+cosA(1-cosA)

=1-cosA+cosA-cos^2 A

= 1-cos^2 A

from trigonometric identity sin^2 A + cos^2 A= 1

sin^2 A= 1- cos^2 A

=sin^2 A

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That’s the number is written in standard scientific notation?
Nata [24]

Option D: 3.47*10^-7 is the correct answer

Step-by-step explanation:

In order to determine the number written in standard scientific notation, first of all we have to understand how the scientific numbers are written

the scientific numbers are written in the form of:

a*10^n

Here

a is a number between 1 and 10 while the value of n can be only integer (positive or negative)

so,

In the given options:

Option A has a number larger than 10 in place of a so it is not in standard notation

Option B has a number less than 1 in place of a  so it is also not in standard notation

Option C has a number larger than 10 in place of a so it is not in standard notation

Option D is in standard scientific notation as 1<3.47<10 and the power of 10 is integer

Hence,

Option D: 3.47*10^-7 is the correct answer

Keywords: Scientific notation, exponents

Learn more about scientific notation at:

  • brainly.com/question/846474
  • brainly.com/question/833559

#LearnwithBrainly

6 0
2 years ago
Create the smallest cone possible with the tool and record the values of the radius height and volume in terms of pi then scale
ololo11 [35]

Answer:

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3 0
2 years ago
What is the first five nonzero multiples of 3 and 10
Masja [62]
Every multiples of 10s has a zero... you do know that... right?
5 0
3 years ago
Somebody please help
Phantasy [73]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
The value of q is:<br><br> A. 42.<br> B. 39.<br> C. 40.
saw5 [17]

Answer:

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Step-by-step explanation:

Its pretty easy i did that on a test and got a 100

5 0
2 years ago
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