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
romanna [79]
2 years ago
8

Evaluate. Write your answer in simplified, rationalized form. Do not round.

Mathematics
1 answer:
borishaifa [10]2 years ago
3 0

Answer:

  cos(45°) = (√2)/2

Step-by-step explanation:

The cosine of 45° is the x-coordinate of the point on the unit circle where the line y=x intersects it. That is, it is the positive solution to the equation ...

  x^2 +x^2 = 1

  x^2 = 1/2 = 2/4 . . . . . collect terms, divide by 2, express the fraction with a square denominator

  x = √(2/4) . . . . . . take the square root

  x = (√2)/2 . . . . . simplify

The cosine of 45° is (√2)/2.

You might be interested in
Pls do both for ( brainlist, thanks, and a 5 star review)
JulijaS [17]

Answer

2/3+5/6= is 1.5

Step-by-step explanation:

first do 2/3=0.66666666666

and 5/6=0.83333333333

then do 0.66666666666+0.83333333333=1.5

3 0
2 years ago
Read 2 more answers
In a game you have 1/20 probability of winning $76 and a 19/20 probability of losing $9. What is your expected value?
oee [108]

Answer:

1

Step-by-step explanation:

5 0
3 years ago
I need help please for my test
Umnica [9.8K]

original figure (-7,-6)

final figure (-7,2)

7 0
2 years ago
A rectangular prism has a length of 1 1/2 meters, a width of 3 meters, and a height of 5 1/2 meters.
denpristay [2]

Answer:

13m

Step-by-step explanation:

because i use calculator soup

4 0
2 years ago
Read 2 more answers
Person who answers first and correctly will be named the brainiest answer.
Korvikt [17]
1) From building 1 to 2: 5 - (-3) = 8

2) From 2 to 3: 4 - (-5) = 9

3) From 3 to 4: 5 - (-3) = 8

4) From 4 to 1: 4 - (-5) = 9

Total: 8 + 9 + 8 + 9 = 34 units = 34*100 feet = 3400 feet.

Answer: 3400 feet
6 0
3 years ago
Other questions:
  • Given the equation 10x + 20y + 40 = 0, Find it’s gradient and intercept
    6·1 answer
  • What decimal is represented by this expanded form? 2 x 10,000 7 x 1,000 4 x 100 9 x 1 3 x 1/10 8 x 1/1,000?
    12·1 answer
  • Tina and her friends want to go bowling. Family Bowling Alley charges $1 for shoes and $4 dollars per game. Knight Owl Bowling c
    10·1 answer
  • Someone help me pls
    13·1 answer
  • What is the value of y?
    13·2 answers
  • 6. Two more than 16 times a number is the same as 2<br> less than the product of -7 and the number.
    8·1 answer
  • How to solve -(y+-6)=-1
    6·1 answer
  • How to multiply 21 x 25 in oldschool way
    15·1 answer
  • Please help me with this, im literally so confused.
    5·2 answers
  • What is the answer I’ve been stuck on this for way too long
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!