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
dybincka [34]
3 years ago
5

Calculator question.

Mathematics
1 answer:
alexgriva [62]3 years ago
3 0

Answer:

D. [0,pi/2]

Step-by-step explanation:

when Ф = 0 in radian

r²=  4cos (2(0))

r² = 4 * 1

r² = 4

∴ r = √4 = 2

r = 2.

when Ф = π/2 in radian

r²=  4cos (2(π/2))

r² = 4 * -1

r² = -4

∴ r = 0

You might be interested in
The quality assurance department of a chair factory samples daily production to test for the strength of the chairs being produc
Thepotemich [5.8K]
This is one of those statistical follow-up questions and had to look for the options. Since the department of quality assurance is assessing the durability of the chairs being produced, the population that they are testing for quality is ALL THE CHAIRS THEY PRODUCED. Hope this helps.
6 0
3 years ago
Read 2 more answers
The circumference of jj's basketball is 29.6 inches. Will it go through the basket that is 10 inches in diameter?
Olenka [21]

Step-by-step explanation:

circumference of jj's basketball = 29.6 inches

Circumference of basket = 3.14 * 10 = 31.4 inches

Because

circumference of jj's basketball < Circumference of basket

Therefore ball will go through the basket.

7 0
3 years ago
Read 2 more answers
2+5+78 equals what??????????????????????????????????????
Andre45 [30]
85 is the answer. 2+ 78 = 80 + 5 += 85.
8 0
3 years ago
Read 2 more answers
PLEASE HELPPPPPP!!!!!!!!!!!!!!!!!!!!!​
Hoochie [10]

Answer:

B is the correct answer for this

5 0
3 years ago
Read 2 more answers
What is the vertex if the graph of y=-x^2
Mrac [35]
I think that 0 is the vertex
4 0
3 years ago
Other questions:
  • If t = the ten digit and u = the one digit, which expression shows the value of interchangingredients the digits in a two digit
    5·1 answer
  • 6 friends share 3 granola bars, how many sixths will each one get?
    11·1 answer
  • The local newspaper has letters to the editor from 60,000 people. If this number represents 25​% of all of the​ newspaper's read
    8·1 answer
  • Going home from school, Terry takes a bus journey of 9km travelling at an average speed of 36km/h. Calcylate the time taken, in
    8·1 answer
  • Ricl made $33,000 from his job last year. He also made $3,000 selling handmade vases at craft shows. Which part of Rick's total
    10·1 answer
  • The sum of two numbers is 18 and their difference is 6.
    10·1 answer
  • Graph the equation. Let x​3, ​2, ​1, ​0, 1,​ 2, and 3. y=3x-1
    11·1 answer
  • Since energy costs began increasing in the 1970s, a major shift in building practices is the use of more *
    7·1 answer
  • Matthew invested $3,000 into two accounts. One account paid 3% interest and the other paid 8% interest. He earned 4% interest on
    5·1 answer
  • Pls help will give brainly
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!