Ask question

Ask question

All categories

3 years ago

10

Use phasor techniques to find an expression for i(t) expressed as a single cosine function, where i(t)=[250cos(377t+30∘)−150sin(

377t+140∘)] ma. enter your expression using the cosine function. round real numbers using two digits after the decimal point.

1 answer:

Elanso [62]3 years ago

5 0

Asked and answered elsewhere. (You can do the rounding yourself.)
brainly.com/question/9359711

You might be interested in

What is the value of x to the nearest tenth? <br> A) 3.3<br> B) 9.5<br> C) 8.0<br> D) 4.7

Alisiya [41]

Answer:

D) 4.7

Step-by-step explanation:

this perpendicular connection with the circle center cuts this intersecting line in half, which is therefore on both sides of x 6.5 long.

I assume 16 is the diameter, so the radius is 8.

therefore, x is one side of the right-angled triangle of

radius

x

half of the intersecting line

Pythagoras

8² = x² + (6.5)²

64 = x² + 42.25

21.75 = x²

x = 4.7

6 0

3 years ago

-90+56<br><br> Plz help me I don’t know what to do

mina [271]

Answer:

-34

Step-by-step explanation:

-90+56= -34

3 0

3 years ago

Read 2 more answers

14 points :) Please answer fast! ;D

vova2212 [387]

Answer:

$x=2y+4$

Step-by-step explanation:

Let

x ------> the number of dogs Larry walked

y -----> the number of dogs Kyle walked

we know that

The linear equation that represent this scenario is equal to

$x=2y+4$

4 0

3 years ago

Write the trigonometric expression <br> Cos (arcsin (u))<br> As an algebraic expression in u

makvit [3.9K]

When we use arcsine, we are finding the angle while giving the trigonometric ratio.

Arcsin(u) = theta can be rewritten as:

sin(theta) = u

Sine is opposite over hypotenuse, so u/1 means that the side opposite to theta (the y value) is u, and the hypotenuse is 1.

We can use Pythagorean Theorem to find the adjacent (x value).

1^2 - u^2 = x^2

x = sqrt(1-u^2)

Back to the original question, we are trying to find cos(arcsin(u)). We just solved all the sides for our triangle using arcsin(u). Now we need to do cos(u).

Cosine is adjacent over hypotenuse.

So our answer is sqrt(1-u^2)/1

Or just sqrt(1-u^2)

5 0

4 years ago

Mike forgot to replace the cap on a bottle of room freshener. The room freshener began to evaporate at the rate of 15% per day.

Serggg [28]

For this case we have a function of the form:
$y = A * (b) ^ x
$
Where,
A: initial amount
b: decrease rate
x: time in days
Substituting values we have:
$y = 40 * (0.85) ^ x
$
Therefore, the graph of the function is a decreasing exponential function in the first quadrant and that has an initial value of 40.
Answer:
graph of exponential function going from left to right in quadrant 1 through the point 0, 40 and approaching the x axis

7 0

3 years ago