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
Ratling [72]
3 years ago
11

(cos2a *cos 4a+ sin 2a*sin 4a)/sin4a

Mathematics
1 answer:
lyudmila [28]3 years ago
4 0

Answer:

Step-by-step explanation:

(cos 4a*cos 2a+sin 4a*sin 2a)/sin 4a

=[cos (4a-2a)]/sin 4a

=(cos 2a)/sin 4a

=(cos 2a) /(2 sin 2a cos 2a)

=1/(2 sin 2a)

=1/2 csc 2a

You might be interested in
Find the missing factor 6x^2+13x-5=(2x+5) ( )
Aneli [31]
Use slip and slide method
x^2+13x-30
(x+15)(x-2)
(x+15/6)(x-2/6)
(x+5/2)(x-1/3)

(2x+5)(3x-1)

Final answer: (3x-1)
8 0
3 years ago
NO LINKS!!!!!
8090 [49]

9514 1404 393

Answer:

  5x^2 +10x = -5

Step-by-step explanation:

The equation will have one solution when the discriminant is zero.

In standard form, the equation is ...

  ax^2 +10x -c = 0

The discriminant of the equation ax^2+bx+c=0 is  ...

  b^2 -4ac

so the discriminant of your equation is ...

  10^2 -4a(-c) = 100 +4ac

We want that to be zero, so we require ...

  100 +4ac = 0

  25 +ac = 0

  ac = -25

Any pair of values of 'a' and 'c' that have a product of -25 will satisfy the requirement. As you state, one possible pair is a = 5 and c = -5. Putting these values into the given equation makes it ...

  5x^2 +10x = -5 . . . . . the equation with a=5, c=-5

_____

<em>Additional comment</em>

Your problem statement does not require that 'a' be non-zero. If <em>a=0</em>, then the equation will have one real solution for <em>any value of c</em>.

If you restrict the solutions to integers, then possibilities include ...

  (a, c) = (1, -25), (5, -5), (25, -1), (-25, 1), (-5, 5), (-1, 25)

6 0
2 years ago
Which of the following is something that should not be a consideration when choosing a health care plan? a. annual premiums to b
poizon [28]
<span>im not really sure about this

</span>
4 0
3 years ago
Read 2 more answers
24 is 120% of what? Pls help
Bess [88]

Answer:

20

Step-by-step explanation:

Let x be equal to the number that 24 is 120% of.

x*1.2=24

Divide both sides by 1.2 to isolate x

\frac{x*1.2}{1.2} =\frac{24}{1.2}\\x=20

Therefore, 24 is 120% of 20.

I hope this helps!

8 0
3 years ago
Read 2 more answers
Each student in a group of 32 students was asked the following question.
Finger [1]

Answer:

.shsnxbjsjJsjsiakzjxjisksjxjs

7 0
3 years ago
Other questions:
  • 30% of what number is 9
    10·1 answer
  • 10 and 11 pleaseeee extra points will be added
    14·2 answers
  • What is the answer for 44/p= 11/5 p=_____
    15·1 answer
  • The line shown below are parallel if the green line has a slope of -4 where is the slope of the redline
    10·2 answers
  • Please help I need this soon
    6·1 answer
  • 7h + 3 = 7(2+h) -11 <br> this is my question
    5·1 answer
  • Enter the value for that makes the given equation true.<br><br> 20−5(6+4)=4−6
    6·1 answer
  • Evaluate the function.
    9·2 answers
  • What is the slope of the line through the points (-2, -1) and (4, 3)?<br> HELP ITS FOR AN EXAM
    15·1 answer
  • Solve pls brainliest
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!