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Mashcka [7]
3 years ago
5

Use the fundamental trigonometric identities to determine the simplified form of the expression

Mathematics
1 answer:
taurus [48]3 years ago
5 0

Cot (B) = Cos(B) / Sin(B)

Cot B * Sin B = cos(B) / Sin(B)  *  Sin(B) = Cos(B)  

Answer: Cos(B)

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For what value(s) of k will the relation not be a function?<br> A = {(3k−4, 16), (4k, 32)}
KiRa [710]

We won't have a function if for same value of x in (x,y) we get different values y.

So first step: figure out k so that the first coordinate (x) is the same:

3k-4=4k    | solve for k

k = -4

no check the values y for the elements of the relation

x = 3k-4 = -12-4=-16

so at -16 we get (-16,16) and (-16, 32), which mean for k=-4 the relation is not a function.

Let me know if you have any questions.


7 0
3 years ago
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Rewrite the equation 5x - 2y = 4 so it is in the form y = mx + b
muminat
Y=(5x-4)/2 first move -2y to the other side to obtain a positive value and make y the subject

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3 years ago
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Lines AB and CD are parallel. Find the measures of the three angles in triangle ABF.
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Answer:

42 Degrees

Step-by-step explanation:

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7 0
2 years ago
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Very important!! Solve the inequality 6r + 30 ≥ 12 or -r &gt; 12 (the question is important for high school application c:)
Fofino [41]

First simplify the one inequality, 6r + 30 greater than or equal to 12 just divide by 6 then subtract 30 from both sides of the inequality. You should get r is greater than or equal to -3. For this one you need to reverse the inequality symbol then divide both sides by -1 to get a positive r, and you get r is less than -12. It's not A because there's two solutions, and it's not D for the same reason. It's not C because r isn't greater than -12. In conclusion it's B because it correctly represents the solutions that make the inequality true. I hope this helps you on your high school application :)

7 0
3 years ago
Translate into an algebraic expression and simplify if possible. I have a total of 10 gigabytes of data on my computer, xgigabyt
pogonyaev

Answer:

(20-3x)/2 GB

Explanation:

Total amount of data on my computer = 10GB

Total amount of data occupied by movies = x GB

If pictures take up half the amount of space that movies do, then;

Total amount of data occupied by pictures = 1/2 of space occupied by movies = 1/2 x

If the remaining are music, the amount of space occupied by music will be expressed as shown;

Total space -(space occupied by movies + space occupied by pictures)

= 10 - (x+1/2 x)

Total amount of data occupied by music = 10 - (x+1/2 x) GB

On simplification;

= 10 - (x+1/2 x)

= 10-{(2x+x)/2}

= 10 - {3x/2}

= (20-3x)/2 GB

Hence, amount of gigabytes of music stored on my computer is expressed as (20-3x)/2 GB.

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3 years ago
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