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
Ahat [919]
3 years ago
8

Cos30° cos45°-sin30° sin 45°​

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

Answer:

(√6 - √2)/4

Step-by-step explanation:

cos30°cos45° - sin30°sin45°

= cos (30 + 45)°

= cos 75°

= (√6 - √2)/4

You might be interested in
Explain how to use the formulas for the circumference of a circle and the area of a rectangle to find the formula for the area o
andreev551 [17]
So we know the formula for circumference is C= πrd. And Circumference is the distance around a circle. 

Example: C= circumference 
C= 6.28 can u find the  circles area :? 
 Step 1: divide 6.28 by 3.14 as the formula says.

Step 2 : after u divided u get 2 which is the diameter. and u divide the diameter by 2 because we are trying to get the radius because the formula for the circles area is 
A= πr ^2

r = radius 
r= 1 

so what is 3.14 times 1
= 3.14

so 3.14 is the answer 

I hope this helped u understand. 
6 0
3 years ago
Read 2 more answers
cannn you helpppp?! its finding the mean of the group! lots of points! mark you brainiest! thannksss :)
astra-53 [7]

Answer:

10 or 10.1

Step-by-step explanation:

3 0
4 years ago
What is the domain of the relation (3,4), (1,3), (1,4), (5,2)
Mumz [18]

Answer:

(3,4) domain is 3, (1,3) domain is 1, (1,4) domain is 1, (5,2) domain is 5

Step-by-step explanation:

Domain is the input, and range is the output. Here's a detailed video you should watch

https://www.khanacademy.org/math/algebra/algebra-functions/domain-and-range/v/domain-of-a-function-intro

4 0
3 years ago
You earn $9.50 per hour at your summer job. Write and solve an inequality to find the number of hours you need to work to buy a
masha68 [24]
Let
h
represent hours worked.
Now, we know the pay for one hour of work is
$
9.50
. So, the amount of pay for
h
hours worked is given by
9.50
h
.
Furthermore, since we're saving for a camera that costs
$
247
,
we want at LEAST
$
247
(but it's okay if we have more). So, we'll be using
≥
in the inequality.
So, our inequality is
9.50
h
≥
247

To solve, we simply divide both sides by
9.50
:
h
≥
247
9.50

h
≥
26

You need to work at least
26
hours to buy the digital
3 0
3 years ago
A ladder is placed 10 feet away from a tree. The length of the ladder is 25 feet. Find the height of the tree?
Dimas [21]

Answer:

23ft approx

Step-by-step explanation:

Given data

Distance from tree= 10ft

Length of ladder= 25ft

We can find the height of the tree by applying the Pythagoras theorem

z^2= x^2+y^2

z= The height of the ladder

x= The distance from the tree

y= The height of the tree

25^2= 10^2+ y^2

625=100+y^2

625-100=y^2

525=y^2

y= √525

y= 22.91

Hence the height of the tree is 23ft approx

7 0
3 years ago
Other questions:
  • A search committee is formed to find a new software engineer. (a) If 100 applicants apply for the job, how many ways are there t
    9·1 answer
  • Solve for x<br> Arctan(2x) = -1<br> Thanks!
    13·1 answer
  • A photo is 4 inches wide. It is placed in a frame with a border that is x inches wide. The total width of frame and photo is 7 i
    12·1 answer
  • The sides of a triangle are as follows:
    12·1 answer
  • RS 300 for 2 years at 5 per annum​
    12·2 answers
  • 2(10) + 2(x – 4) can someone help me with this problem
    7·2 answers
  • What is 12 divided by 4
    9·1 answer
  • Hey guys pls help <br><br>explain answer pls <br><br>NO links or reported
    9·1 answer
  • What type of Distribution do these models represent (select all that supply)?​
    10·2 answers
  • Please please help me:))
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!