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
vesna_86 [32]
3 years ago
13

angle 0 is in quadrant 1 with sin0 = 2/5. Use the Pythagorean identity, sin^2 0 + cos^2 0 = 1, to calculate the value of cos0 as

a radical.
Mathematics
1 answer:
Gwar [14]3 years ago
7 0
We know that
sin²x+cos²x=1
so 
clear cos x
cos x=(+/-)√[1-sin²x]

in this problem
<span>Angle 0 is in quadrant 1 -----> cos o and sin o are positive
</span>sin o=2/5
cos x=√[1-(2/5)²]----> cos o=√[1-4/25]----> cos o=√[21/25]---> cos o=√21/5

the answer is
cos o=√21/5

You might be interested in
Solve absolute value of x-2=4
nika2105 [10]

Answer:

6

Step-by-step explanation:

2+4=6

you need to do the oppsite opporation and that the answer for example x-2=4 just add 2 and 4 and thats the answer that is aslo the same rule as divsion and multiplecation sorry for spelleng mistakes hope this helps!!!!!!

4 0
3 years ago
Read 2 more answers
Find the common factor and rewrite. Type your answer in the box. Do not use any spaces.
finlep [7]

Common factor is 4X

Rewriting the term we get: 4X(Y + 2Z)

Step-by-step explanation:

We need to find the common factor of the expression: 4XY + 8XZ

A common factor is the term that is common in all the terms of the expression.

In the given expression the common factor is: 4X because it is common in both terms

4XY + 8XZ

=4X(Y + 2Z)

So, Common factor is 4X

Rewriting the term we get: 4X(Y + 2Z)

Keywords: Factors

Learn more about factors at:

  • brainly.com/question/10771256
  • brainly.com/question/1414350
  • brainly.com/question/2568692

#learnwithBrainly

3 0
4 years ago
Learn with an example
Daniel [21]

Answer: 10,000

11 * 2 = 22

5,000 * 2 = 10,000

4 0
3 years ago
Determine that table of values for these simultaneous equations.<br> 5x+y=7<br> 3x-y= 1
Leokris [45]

Answer:

What we suppose to be answering?

Step-by-step explanation:

8 0
3 years ago
The numbers of students in the four sixth-grade classes at Northside school are 26,19,34 and 21. Use properties to find the tota
san4es73 [151]
Basically there are 3 addition properties and they are associative property, identity property, and commutative property. 

Commutative property is just changing the order of the addends. Example: 26+19+34+21= 21+34+19+26

Identity Property is just adding a 0 to the number that doesnt change anything. Example: 26+19+34+21 +0 = 100

Associative property is just changing the grouping of the addends. Example: (26+19) + (34+21) 
6 0
3 years ago
Other questions:
  • What is the value of y^-5 and x^-3 for x = 2 and y = -4?
    13·1 answer
  • Stephanie wants to buy 6 pencils case at a cost of $0.99 each.How many will the 6 pencils cases cost altogether
    5·2 answers
  • Question 14 (1 point)
    14·1 answer
  • Three people bought tickets to a movie. One person payed with a $50 bill and received $23 back. If they group used a coupon for
    10·1 answer
  • 1. What is -6 9/16 written as a decimal?
    13·2 answers
  • Find the values of x and
    5·1 answer
  • At what value of x does the graph of the follow function F(x) have a vertical asymptote?
    11·1 answer
  • Nancy wants to buy a sweater that is priced at $75. If the store is running a 60% off sale, what will be the
    12·1 answer
  • 1,030 at 4% compounded semiannually for 2 years
    15·1 answer
  • 0.0000364% = 1 in ??? like 1 in 729
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!