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marin [14]
3 years ago
8

Express the complex number in trigonometric form. -3i

Mathematics
2 answers:
Maksim231197 [3]3 years ago
8 0
Remember to use trig form the general equation is: r(cos(angle) + i sin(angle))
to find r, take √a^2 + b^2 to get 3 for the angle it would be undefined so thee argument would be π / 2. So your answer is 3(cos(π/2) + i sin(π/2))
Alexxandr [17]3 years ago
8 0

Answer:

it is 270 degrees

Step-by-step explanation:

-3i can rewrite as 0+(-3i) then you can draw a graph.(0,-3) locate that point

each quadrant is 90 degrees therefore it is 270

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Given the sequence below, what is the 9th term? 2, 1, 4, -1, 6, ...
jolli1 [7]

Answer:

The 9th term would be 10.

Step-by-step explanation:

Each of the odd terms is 2 more than the previous. We do not even need to look at the even terms to find the 9th one.

2, odd, 4, odd, 6, odd, 8, odd, 10

8 0
3 years ago
The slope of a line is 2. The y-intercept of the line is –6. Which statements accurately describe how to graph the function
gogolik [260]
F(x) = 2x - 6
-6 is the y-intercept
2 is the slope
4 0
3 years ago
Read 2 more answers
Lisa completed the table to describe the product of a mystery one - digit factor and factor and each numbers
deff fn [24]

Answer: part A is 0, 2, 4, 6, 8 and part B is Because the products all are even, the mystery factor must also be an even number. We have selected all of the even one-digit numbers.

Step-by-step explanation:

So, the number you need to find is between 0 and 9, because is a 1-digit number. For example, it cannot be 10 because 10 is a 2-digit number.

So, the number could be like 0,1,2,3...etc

In the table, the "X" in the left upper corner is the symbol for multiplication.

The "?" in the left lower corner represents the mystery number.

The table shows that the product of the mystery number and 1,2,3,4 and 5 is always an even number

For example, the product of the mystery number and 3 is even.

That means that our mystery must be even.

So, we know that the mystery number is between 0 and 9 and it must be even.

Therefore, the mystery number can be one of the following numbers:

0, 2, 4, 6, 8

8 0
3 years ago
Equations<br> Solve T = C(9+ AB) for B
MaRussiya [10]

Answer:

Simplifying

T = C(9 + AB) * forB

Reorder the terms for easier multiplication:

T = C * forB(9 + AB)

Multiply C * forB

T = forBC(9 + AB)

T = (9 * forBC + AB * forBC)

Reorder the terms:

T = (forAB2C + 9forBC)

T = (forAB2C + 9forBC)

Solving

T = forAB2C + 9forBC

Solving for variable 'T'.

Move all terms containing T to the left, all other terms to the right.

Simplifying

T = forAB2C + 9forBC

Step-by-step explanation:

Simplifying

T = C(9 + AB) * forB

Reorder the terms for easier multiplication:

T = C * forB(9 + AB)

Multiply C * forB

T = forBC(9 + AB)

T = (9 * forBC + AB * forBC)

Reorder the terms:

6 0
2 years ago
Shelly buys 10 candy bars and gives 4 to her friends. How many candy bars does she have left
lara [203]

Answer:6

Step-by-step explanation:

If you subtract 10-4 you get 6

3 0
3 years ago
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