HURRY !!!<br> I really need the answer! And fast!

Write the real form of each complex equation.

Lerok [7]

Answer:

Step-by-step explanation:

Given

(a) $z=4\cos (\theta )+9i\sin (\theta )$

$Re(z)=4\cos \theta$

$Im(z)=9\sin \theta$

(b) $z=6\cos (\theta )+i\sin (\theta )$

$Re(z)=6\cos \theta$

$Im(z)=\sin \theta$

(c) $z=\sqrt{5}\cos (\theta )+\sqrt{10}i\sin (\theta )$

$Re(z)=\sqrt{5}\cos (\theta )$

$Im(z)=\sqrt{10}\sin (\theta )$

(d) $z=5-2i+4\cos (\theta )+7i\sin (\theta )$

$z=5+4\cos \theta +i(7\sin \theta -2)$

$Re(z)=5+4\cos \theta$

$Im(z)=7\sin \theta -2$

5 0

3 years ago

What are possible rational roots of polynomial function 0= 3x^8 + 11x^5+4x+6

stealth61 [152]

Answer:

1,-1,2,-2,3,-3,6,-6, 1/3, -1/3, 2/3, -2/3

Step-by-step explanation:

Factors of the constant which are:

+1,-1,+2,-2,+3,-3,+6,-6

Also, these divided by the factors of the leading coefficient (3 in this case)

Factors of 3 are 1 & 3

Dividing by 1 will give the same values

Dividing by 3:

1/3,-1/3,2/3,-2/3,3/3,-3/3,6/3,-6/3

1/3,-1/3,2/3,-2/3,1,-1,2,-2

Distinct possibilities:

1,-1,2,-2,3,-3,6,-6, 1/3, -1/3, 2/3, -2/3

6 0

3 years ago

A car of m = 1200. kg collides with a tree while traveling 60.0 mph. The collision occurs over a time period of 0.0500 seconds.

goldfiish [28.3K]

Answer:

6.4331 × 10 5N

Step-by-step explanation:

Given the following :

Mass (m) of car = 1200kg

Initial Velocity (u) of car = 60 mph

Final velocity = 0 ( comes to rest)

Velocity in m/s = 60 / 2.24 = 26.785 m/s

Time (t) = 0.0500

Using the relation :

Ft = m(v - u)

Where,

v = final velocity ; u = initial velocity ; t = time ; F = force

F*0.05 = 1200(26.785 - 0)

0.05F = 32142.86 - 0

F = 32142.86 / 0.05

F = 642857.14 N

F = 6.43 × 10^5 N

3 0

3 years ago

Two ramps are being built with the same slope. The first ramp is twice the height of the second ramp. Does the first ramp have t

sesenic [268]

Yes, because slope is the steepness of a line. if the steepness of those two lines are the same, you will have to expand the x-axis (the length of the first ramp).

6 0

2 years ago

PLZZZ I NEED THIS QUICK <br> What is [-4.6].

andreyandreev [35.5K]

Answer:

Slope=0

Step-by-step explanation:

I don't know what you need done but I will try my best.

3 0

4 years ago

HURRY !!! I really need the answer! And fast!