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
fgiga [73]
3 years ago
5

How do we know the angle of 45 degrees is always equal to the square root of 2 over 2?

Mathematics
1 answer:
stellarik [79]3 years ago
8 0
The question is not correct, you mean the the sine and cosine of 45 degrees is always square root 2 over 2. 

Well you need to know how the sine and cosine are calculated. I would search in google for "sine and cosine in a unit circle". There is a very good Khan academy video that explains this in 10 minutes. Watch and learn :-)
You might be interested in
2 Emma buys 33 yards of blue fabric and some yellow fabric at a store. She buys a total of 53 yards of fabric. The equation 1 2
Rus_ich [418]

Step-by-step explanation:

your answer is 99


6 0
3 years ago
Rob has 7 ones, nick has 5 ones.they put all their ones together.what number did they make?
Anni [7]
7+5= 12 ones. Or one ten and 2 ones. They made 12.
3 0
3 years ago
Read 2 more answers
Alysha’s average speed when walking home from the market was 5 mph, and it takes her 21 minutes longer than when she drives to t
Delicious77 [7]

9514 1404 393

Answer:

  3 minutes

Step-by-step explanation:

Let x represent Alysha's time to drive home from the market.

Speed and time are inversely proportional to each other (for the same distance), so we have ...

  (walking speed)(walking time) = (driving speed)(driving time)

  5(x +21) = (8·5)(x)

  x +21 = 8x . . . . . . . . . divide by 5

  21 = 7x . . . . . . . . subtract x

  3 = x . . . . . . .divide by 7

It takes Alysha 3 minutes to drive home from the market.

3 0
3 years ago
The force which pulls or tends to pull a body is called____​
Setler [38]

Answer:

force of gravity

hope it helps

pls mark me as the brainliest

thank u

8 0
3 years ago
Read 2 more answers
The ratio of the number of beads Karen had to the number of beads Patricia had was 2:5 .After Patricia bought another 75 beads,t
blondinia [14]
K:P=2:5
P+75 it is 4:15
at first, P=5 units
so we have
2:5 and 4:15
since the K units didn't change we conver them to the same
2:5 times 2:2=4:10
so from 4:10 to 4:15 is a change of 75 in the right side
therefor 75=5 units so 75/5=15/1= 1 unit
so at first K=4 units=4 times 1 unit=4 times 15=60
P=10 units so 10 times 15=150

at first
Karen=60
Patricia=150
7 0
3 years ago
Other questions:
  • tony goes to the funfair and has one go on the hoopla ad one go on the darts. the probability that he wins at hoopla is 0.3 the
    9·1 answer
  • How many six-inch by six-inch square tiles are needed to cover a three-foot by two-foot rectangular section of floor?
    11·2 answers
  • Kim uses decals to decorate 5 cars
    13·2 answers
  • Hurry please!!
    9·1 answer
  • Mrs. Kelly's brother is 15 year younger than her. Their combined ages add up to 62 years. What is Mrs. Kelly's age
    15·1 answer
  • Hannah walked 1 3/4 miles in the morning and 3 2/3 miles in the afternoon. Hannah walked
    11·2 answers
  • Marcus is making a square pyramid out of cart board. He drew a diagram of a square pyramid as shown below. Based on Marcus’ diag
    15·2 answers
  • I give 20! Find the surface area. And without explanation please, I don’t have enough time.
    12·1 answer
  • Write an equation of the line that passes through each pair of points (- 2, - 3), (4, 5)
    7·1 answer
  • Please help due today
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!