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
tekilochka [14]
3 years ago
6

What is the exact value of cos 45° ?

Mathematics
2 answers:
kipiarov [429]3 years ago
5 0

Answer:

sqrt{2}/2

Step-by-step explanation:

Georgia [21]3 years ago
3 0
Let the two sides of a right triangle be equal to one, which means that the hypotenuse is √2

Since cosa=adjacent side / hypotenuse

cos45=1/√2

We can rationalize the denominator by multiplying numerator and denominator by √2

√(2)/2

or if you prefer:  √(1/2)
You might be interested in
What is the first step in writing f(x) = 3x2 + 6x – 8 in vertex form?
kkurt [141]
The first step in writing f(x) = 3x² + 6x - 8 in vertex form is

E. Factor out 3 from the first two terms.

f(x) = 3x² + 6x - 8
f(x) = 3(x² + 2x) - 8
f(x) + 8 = 3(x² + 2x + __)
f(x) + 8 + 1 = 3(x² + 2x + 1)
f(x) + 9 = 3(x+1)²
f(x) = 3(x+1)² - 9

5 0
3 years ago
Read 2 more answers
Tax is 7.5%, how much tax will you pay on a suit that costs $350
Harlamova29_29 [7]
$376.25 tax added on is $26.25

3 0
3 years ago
Read 2 more answers
Please helppp asap!!!!
tatiyna

Answer:

infinitely many solutions

Step-by-step explanation:

5 0
3 years ago
What’s the correct name for that line?
eimsori [14]

GM, because when naming a line, you go from left to right just like how we read.

8 0
3 years ago
3^2x+1=9^2x-1 solve the equation ​
stich3 [128]
9x+1 =81x-1


2 = 72x

X=36
8 0
3 years ago
Read 2 more answers
Other questions:
  • In a city school, 60% of students have blue eyes, 55% have dark hair, and 35% have blue eyes and dark hair. What is the probabil
    10·1 answer
  • Explain the different ways it it possible to add 2 rational numbers and get a negative number
    15·1 answer
  • An airplane has flown 260 miles out of a total trip of 500 miles. What fraction, in simplest form, of the trip has been complete
    11·1 answer
  • Find the x-coordinates of the points where the graph crosses the x-axis.<br> y = (x - 3)(x + 8)
    7·1 answer
  • PLEASE SOMEONE HELP !!!QUICK!!!<br> ATTACHED FILE BELOW NEED ANSWER ASAP
    5·2 answers
  • Let f(x) = x^2 - 2x <br><br> a. Find and simplify f(5) <br> b. Find the value of x such that f(x)=3
    8·1 answer
  • Which CANNOT be used in a proof?
    15·2 answers
  • PLEASE HELP<br> What is the slope of the line in the graph?
    5·1 answer
  • Find the indicated arc length. 11/6
    14·1 answer
  • 450 divisible by 2,3,4,5,6,8,9<br> or 10 explain why ! EXPLAIN WHY !?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!