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SIZIF [17.4K]
3 years ago
15

Double-Angle and Half-Angle Identiies [See Attachment] Question 4

Mathematics
2 answers:
Nesterboy [21]3 years ago
8 0
Please make it brainleist

Sati [7]3 years ago
5 0

We have


\sin 2 \theta = 2 \sin \theta \cos \theta


We already know \sin \theta so we have to find \cos \theta.


Theta is in the first quadrant so we choose the positive sign:


\cos \theta = \sqrt{1 - (2/5)^2} = \sqrt{21/25} = \frac 1 5\sqrt{21}


\sin 2 \theta = 2 (\frac 2 5)(\frac 1 5 \sqrt{21}) = \dfrac{4 \sqrt{21}}{25}


Choice c


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Answer:

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Step-by-step explanation:

Divide by 2, subtract 8 ...

  2(4/x +8) = 18

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Tbh I'm just too lazy to actually do this and my head hurts from the rest of my school work so I'm just asking it on here -2/5 +
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1/10

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Match each area to its corresponding radius or diameter of the circle.(All areas are approximate.) )
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Answer:

<u>Radius: 12 units </u>

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What is the factor of x³ 5x² 2x 24?
Delvig [45]

The factors of the expression x³-5x²-2x+24 are: (x+2)(x-3)(x-4)

<h3>What is a factor?</h3>

A factor is a number that completely divides another number.

In other words, since the result may be divided by the two whole numbers we are multiplying, they are factors of the result if multiplying two whole numbers produces a result.

The numbers that can divide a number exactly are called factors.

There is none left over after division as a result.

The numbers you multiply together to produce another number are called factors.

A factor is hence the division of another number.

So, we have the expression: x³-5x²-2x+24

Now, calculate the factors as follows:

x³-5x²-2x+24

We already know that: P(-2) = 0

Hence, x+2 is a factor.

Now, other factors are: x² - 7x + 12

x² + 4x + 3x + 12

(x - 3)(x - 4)

Therefore, the factors of the expression x³-5x²-2x+24 are: (x+2)(x-3)(x-4)

Know more about the factors here:

brainly.com/question/24351176

#SPJ4

Correct question:
What is the factor of x³-5x²-2x+24?

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