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Firdavs [7]
3 years ago
11

1-cos(12x)= A. 2sin^2(6x) B. 2cos^2(6x) C. 2cos^2(12x) D. 2sin^2(12x)

Mathematics
2 answers:
Ksivusya [100]3 years ago
7 0

Answer:  The correct option is (A). 2sin²(6x).

Step-by-step explanation: We are given the value of the following trigonometric expression:

T_e=1-\cos(12x).

We will be using the following trigonometric identity:

1-\cos x=2\sin^2\dfrac{x}{2}.

So, we have, using the above identity that

T_e\\\\=1-\cos(12x)\\\\=2\sin^2\left(\dfrac{12x}{2}\right)\\\\=2\sin^2(6x).

Therefore, the value of 1-cos(12x) is 2sin²(6x).

Thus, (A) is the correct option.

Y_Kistochka [10]3 years ago
3 0
Cos(12x) = cos(6x+6x) = cos6xcos6x -sin6xsin6x = cos^2(6x) -sin^2(6x)

1 - cos(12x) = 1 - (cos^2(6x) -sin^2(6x)) = sin^2(6x) +cos^2(6x) - cos^2(6x) +sin^2(6x) = 2sin^2(6x)

so choice A. is right sure 
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Answer:

Step-by-step explanation:

In order to write the equation of the line perpendicular to the given line, we first have to know what the slope of the given line is, and there's no way to tell by looking at it in its current form, which is standard. We need to solve that equation for y to determine the slope of that line. Solving for y:

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* : point-slope form

** : slope-intercept form

*** : standard form

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3 years ago
Which answer !!!!!!!!!
ycow [4]
The first answer, answer A. It's easy.

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