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Dvinal [7]
3 years ago
9

Rotate the yellow dot to a location of 6 radians. After you rotate the angle, determine the value of cos 6, to the nearest hundr

edth.

Mathematics
1 answer:
Helen [10]3 years ago
6 0

Answer:

cos6 = 0.96

Step-by-step explanation:

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In need help please
pantera1 [17]

Answer:

->a is 2

->b is one eight

Step-by-step explanation:

one fourth dividen in two becomes one eight.

5 0
2 years ago
Factorise 2a – 4a3 + 6abc
Viefleur [7K]
The answer for this will be

2a(1-2a ²+3bc)
7 0
3 years ago
What complex number is represented by the polar coordinates (4, -pi/4)
nexus9112 [7]

Answer:

\displaystyle \large{z=2\sqrt{2} -2 \sqrt{2}i}

Step-by-step explanation:

A complex number is defined as z = a + bi. Since the complex number also represents right triangle whenever forms a vector at (a,b). Hence, a = rcosθ and b = rsinθ where r is radius (sometimes is written as <em>|z|).</em>

Substitute a = rcosθ and b = rsinθ in which the equation be z = rcosθ + irsinθ.

Factor r-term and we finally have z = r(cosθ + isinθ). How fortunately, the polar coordinate is defined as (r, θ) coordinate and therefore we can say that r = 4 and θ = -π/4. Substitute the values in the equation.

\displaystyle \large{z=4[\cos (-\frac{\pi}{4}) + i\sin (-\frac{\pi}{4})]}

Evaluate the values. Keep in mind that both cos(-π/4) is cos(-45°) which is √2/2 and sin(-π/4) is sin(-45°) which is -√2/2 as accorded to unit circle.

\displaystyle \large{z=4\left(\frac{\sqrt{2}}{2} - \frac{\sqrt{2}}{2}i \right)}\\\\\displaystyle \large{z=2\sqrt{2} -2 \sqrt{2}i}

Hence, the complex number that has polar coordinate of (4,-45°) is \displaystyle \large{z=2\sqrt{2} -2 \sqrt{2}i}

3 0
1 year ago
Evaluate the degree of the polynomial (y3 – 2) ( y2 + 11), expand using algebraic expressions and answer.
posledela

Answer:

y^5+11y^3-2y^3-22

Step-by-step explanation:

5 0
3 years ago
2x -3y=8 solve for y
brilliants [131]
2x-3y=8\ \ \ \ \ \ |subtract\ 2x\\\\-3y=8-2x\ \ \ \ \ \ \ \ \ |:-3\\\\y=\frac{8-2x}{-3}
5 0
3 years ago
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