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GalinKa [24]
3 years ago
7

Convert z = 9cos200° + 9isin200° from polar form to rectangular form.

Mathematics
1 answer:
Vlada [557]3 years ago
6 0

Answer:

z = -8.46 - 3.08i.

Step-by-step explanation:

cos 200 = -0.93969 so 9 * cos 200 = -8.46 to the nearest hundredth.

sin 200 = -0.3420 so 9 * sin 200 = -3.08 to nearest hundredth.

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Filipe was playing with a triangle on a coordinate plane. The triangle's area is 24 square units. The largest circle he can fit
pickupchik [31]

Answer:

52.36%

Step-by-step explanation:

First, you need to find the radius of the circle. You can do this by using the Pythagorean theorem, which states a^2+b^2=c^2. In this case, a and b are equal to 1.2 and 1.6, and c is the radius of the circle. Plugging in we get 1.2^2+1.6^2=c^2 or 1.44+2.56=c^2 or 4=c^2. Finding the square root of both sides of the equation, we find that 2=c. Now that we have the radius, we can find the area of the circle. The area of a circle is expressed as πr^2, and plugging in 2 for r we get an area of 4π, or ~12.56637. Now all we do is divide 12,56637 by 24 and get what percentage of the area of the triangle the circle covers, which is roughly 0.5236, or 52.36%

4 0
3 years ago
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dsp73
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mafiozo [28]

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3 years ago
Which expression below is the correct representation of "the product of 4 and a
Katarina [22]
I believe it is C; 4n + 6 = 2n - 9

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5 0
3 years ago
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matrenka [14]
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7 0
4 years ago
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