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3 years ago

Express the complex number in trigonometric form. -3i

2 answers:

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

You might be interested in

What is 3/5 times 20

igor_vitrenko [27]

First make 20 into a fraction, then solve; 3/5 · 20/1. 60/5 = 12. Hope that helps!

3 0

2 years ago

The following table shows the final scores for a group of mini golf reset adventure Land find the median number of strokes

solong [7]

The median would be the middle data point. Let’s list the points

25, 26, 31, 39, 32, 57

Put them in order from least to greatest

25, 26, 31, 32, 39, 57

There is an even amount of data so take the two center points and divide by 2

31 + 32 = 63

Divide by 2

31.5

There would be an average of 31.5 strokes

7 0

2 years ago

Read 2 more answers

What is 5x=-2y+6 in slope-intercept form?

Gemiola [76]

Answer:

y=-5/2x+3

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Trevor and marissa together have 26 t-shirts to sell. If marissa has 6 fewer tshirts that trevor, find hiw many tshirts trevor h

Eva8 [605]

Answer:

Number of t-shirts Trevor have are 16

If Trevor have 16 t-shirts, than Marissa will have 10 t-shirts.

Step-by-step explanation:

Let, the number of t-shirts Trevor has = x and number of t-shirts Marissa has = y.

Since, they both have total of 26 t-shirts. We get,

$x+y=26$

Moreover, Marissa has 6 t-shirts less than that of Trevor.

So, we have,

$y=x-6$

On solving the system of equations, we get,

$x+y=26$ implies $x+x-6=26$ implies $2x=26+6$ i.e. 2x= 32 i.e. x= 16.

So, $y=x-6$ implies $y=16-6$ i.e y= 10.

Hence, the number of t-shirts Trevor and Marissa have are 16 and 10 respectively.

That is, If Trevor have 16 t-shirts, than Marissa will have 10 t-shirts.

8 0

3 years ago

A cosine function has a period of 4, a maximum value of 20, and a minimum value of 0. The function is a not a reflection of its

3241004551 [841]

Answer:

Step-by-step explanation:

You'll need to find a way to share the graph or graphs associated with this problem.

The period is 4. The relationship between period and b (the coefficient of the independent variable of the cosine function) is (period) =(2π.b). Given that the period here is 4,

2π 2π

4 = ---------, and so b = ------- = π/2.

So now our y = a*cos (bx + c) becomes

y = 10*cos (------x + 0 + 10

The horizontal center line of this cosine curve is y = 10. The maximum value of the curve is 20, which is 10 + 10, and the minimum value is 0, which is 10 - 10.

5 0

2 years ago