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
Zinaida [17]
3 years ago
8

Please help

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
4 0

Answer:

cos (theta) = √21/5

Step-by-step explanation:

sin (theta) = 2/5

(sin (theta))^2 = 4/25

4/25 + (cos (theta))^2 = 1

(cos (theta))^2 = 1 - 4/25 = 21/25

cos (theta) = √21/5

You might be interested in
3(2x + 12) = -2(x - 4) + x
mart [117]

Answer:

-4

Step-by-step explanation:

1. Use the distributive property to get 6x + 36 = -2x + 8 + x

2. Combine like terms 6x + 36 = -x + 8

3. Subtract 36 on both sides. 7x + 36 = 8 > 7x = -28

4. Divide by 7

-28/7 = -4  x=4

5 0
4 years ago
Read 2 more answers
A square photograph has a perimeter of 20 inches what is the area of the photograph
navik [9.2K]
Since it's a square it must have 4 sides.
20÷4=5

area=l×w or b×h
5×5=25 (the sides of a square have the same length)

the area of the photograph is 25in²

hope this helped
7 0
4 years ago
Does anyone know the answer
antiseptic1488 [7]
The answer is twelve rows.
6 0
4 years ago
Read 2 more answers
Hell meeeeeeeeeeee please
DiKsa [7]

Answer:

OOOOOOOOHHH SHUTE BROTHER SORRY WISHED I COULD HELP but im blonde so sowwy

4 0
3 years ago
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!
ehidna [41]

Answer:

yes, you can form a triangle with the side lengths given

4 0
3 years ago
Read 2 more answers
Other questions:
  • Area of this figure????
    6·2 answers
  • What is the sum _71/6 +35/6 in the simplest terms ? Show your work
    7·1 answer
  • Find the volume of a cylinder with a diameter of 8 inches and a height that is three times the radius. Use 3.14 for pi and round
    12·1 answer
  • The number of ducks and pigs in a field totals 34. The total number of legs among them is 86. Assuming each duck has exactly two
    9·1 answer
  • Ali receives a 10% pay
    10·1 answer
  • How do you evaluate expressions
    8·1 answer
  • Let f(x)=24/1+3e−1.3x .
    14·2 answers
  • The graph of the function F is shown above...<br> Determine F(3)!
    12·1 answer
  • What is -11=x/9-10? plz helps
    5·1 answer
  • Please help this is due today and. I need to get it done fast!!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!