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
sergeinik [125]
3 years ago
14

COS2A+ cos2 A cot2A =cot 2 A

Mathematics
2 answers:
user100 [1]3 years ago
7 0

9514 1404 393

Explanation:

This is an identity.

  cos²(A) +cos²(A)cot²(A) = cot²(A)

Transforming the left side, we have ...

  = cos²(A)(1 +cot²(A))

  = cos²(A)csc²(A)

  = (cos(A)/sin(A))²

  = cot²(A)

Kryger [21]3 years ago
6 0

Answer:

a= (π/4) + (kπ/2)

Step-by-step explanation:

I have attached the explanation above. hopefully this will help

You might be interested in
Steve drove 9 1/2 hours at 66 miles per hour. What distance, in miles, did he travel?
Lynna [10]

Answer:

627 miles

Step-by-step explanation:

66×9.5=627 miles

7 0
3 years ago
What is36.8+[11.6-(2.5×3)]2
givi [52]

Answer:

Step-by-step explanation:

The answer is 33.4

4 0
3 years ago
Which represents the solution of the graphed system of equations, y=x^2-2x and y=-2x-1
elena55 [62]

Answer:

x = √(-1) = i

Since the value of √(-1) is not real.

The system has no real solution.

Step-by-step explanation:

The solution to the system of equations is at the point where they intercept each other.

y1 = y2

For the given equation;

y=x^2-2x and y=-2x-1

To get the where they intercept, we will equal both equations;

y=x^2-2x = -2x-1

x^2 - 2x = -2x - 1

x^2 - 2x + 2x + 1 =0

x^2 +1 = 0

x^2 = -1

x = √(-1) = i

Since the value of √(-1) is not real.

The system has no real solution.

6 0
4 years ago
How many 5-millileter test tubes filled with water will it take to fill a 1 leter container?
aliya0001 [1]
One liter is equal to 1000 milliliters. Use the conversion to find your answer. 1000 milliliters / 5mL per tube = 200 tubes
5 0
4 years ago
1000 jumps in 3 hours. How many jumps are there per hour?
DiKsa [7]
Just multiply 1000 jumps by 3 to get your answer.
6 0
3 years ago
Read 2 more answers
Other questions:
  • If your bill was $67.82 and there is a 7.5% late fee how much is your bill
    10·1 answer
  • Least to greatest 2.614;2.146;2.46;2.164
    13·2 answers
  • Given that the measure of ∠x is 123°, and the measure of ∠y is 51°, find the measure of ∠z. °
    15·1 answer
  • Given the picture, what is the length of AC?
    7·1 answer
  • A girl has a square pool with an area of 81 square feet and she adds a patio which is 3 feet wide around the pool what is the to
    5·1 answer
  • Find the coordinates of the midpoint of line HX.. . H(0,0), X(8,4)
    13·1 answer
  • Find the surface area of the sphere with the given diameter or radius <br> d=8ft
    12·1 answer
  • Jon and Keith save money at the end of each month and begin saving money at the same time . Jon's savings after m months are mod
    11·1 answer
  • HELP ME PLS
    10·1 answer
  • What's 8,936.25 to the nearest hundred? please help​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!