1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mrrafil [7]
3 years ago
13

What is the exact value of arccos(−2√2) ?

Mathematics
1 answer:
Strike441 [17]3 years ago
4 0

Answer:

See explanation

Step-by-step explanation:

The range of the cosine function is -1\le \cos x\le 1

Therefore arc \cos (-2\sqrt{2}) is not defined.

Assuming your question is rather arc \cos (-\frac{\sqrt{2}}{2})

Then arc \cos (-\frac{\sqrt{2}}{2})=\pi-arc \cos (\frac{\sqrt{2}}{2})  in the second quadrant.

arc \cos (-\frac{\sqrt{2}}{2})=\pi-\frac{\pi}{4}

arc \cos (-\frac{\sqrt{2}}{2})=\frac{3\pi}{4}

You might be interested in
Evaluate the piecewise function below for f(3):
gregori [183]
F(3)={2(3)-9}
F(3)={6-9}
F(3)={-3}
8 0
3 years ago
How do you graph a linear function to a line graph
anygoal [31]

Answer:

use point slope form

y=mx+b

8 0
3 years ago
If y = 8 cm, what is the area of the blue section of this shape?
Ivahew [28]

Answer:

56 cm squared

Step-by-step explanation:

First things first: Cop one triangle off the rectangle, and attach it to the other one, so the shape looks like a L

Now I can actually solve this:

The left side is 8 cm (because y = 8 cm)

The top is 10 cm

The middle is 6 cm

The inside left is 3 cm

And the very bottom is 2 cm

First, we'll solve for the newly constructed rectangle: 3 x 2. That equals 6.

Next, solve for the longer rectangle: 10 x 5. That's 50.

Now, add the two areas, and we get 56. So the area of the whole thing is 56 cm squared.

(Please keep in mind that I could be wrong, so double check it for me, thanks!)

7 0
2 years ago
Give f(x)=4x-6 and g(x)=f(2x), write an equation for g
neonofarm [45]

Step-by-step explanation:

G(x) =4(2x)-6

G(x)=8x-6

7 0
3 years ago
3 over 8 multiplied by 10 over 9 multiplied by 16
Gnom [1K]

Answer:

20/3

Step-by-step explanation:

(3/8)*(10/9)*16

This is 30/72 = 5/12

5/12*16=20/3

7 0
1 year ago
Read 2 more answers
Other questions:
  • What is 7.5 quarts in pints
    13·1 answer
  • Write three different improper fractions that equal 4 1/2
    9·2 answers
  • I have this weird question that has to do with linear equations (I think), and this is what it says. Let f(x) = 4x - 5 A. Find f
    6·1 answer
  • Which values of c will cause the quadratic equation –x2 + 3x + c = 0 to have no real number solutions? Check all that apply.
    8·2 answers
  • Could someone please explain to me how to do this!
    13·1 answer
  • Changes in Mean
    11·1 answer
  • 7+7x;7(x+1/7 expression
    14·1 answer
  • A card is drawn from a standard deck of cards. Determine whether the events are mutually exclusive or inclusive. Then, find the
    12·1 answer
  • Identify the domain and range of each of the graphs below.
    15·1 answer
  • LOL i need help this is due in like 15 minutes and i don't know what to do
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!