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
arlik [135]
2 years ago
10

Which expression is equivalent to cos(3x) sin x?

Mathematics
2 answers:
ArbitrLikvidat [17]2 years ago
7 0

Answer:

Step-by-step explanation: I tried all the other options and this was the only correct one for me on Edmentum.

LuckyWell [14K]2 years ago
4 0

Answer:

\frac{1}{2} [sin(4x)-sin(2x)]

Step-by-step explanation:

Use the Product-Sum identity to turn cos(3x) sin x into a sum.

Formula: cos(u) + sin(v) = \frac{1}{2}[sin(u+v)-sin(u-v)]

Plug 4x and 2x for u and v into the formula: \frac{1}{2}[sin(3x+x)-sin(3x-x)]

Simplify: \frac{1}{2}[sin(4x)-sin(2x)]

:)

You might be interested in
Explain how you decide whether the final answer to a multiplication problem is
Evgesh-ka [11]

Explanation:

Regardless of the number of factors, the product will be negative if an odd number of factors are negative.

In the example, 3 of the factors are negative. 3 is an odd number so the product will be negative.

  -2*-3*-1*1 = -6

_____

Of course, the product will be zero if any factor is zero, regardless of the signs of any other factors.

8 0
3 years ago
Everythings in the pic!
yanalaym [24]

Answer:

  • D. 32 times; 5/4*40 = 32

Step-by-step explanation:

It is expected the spinner to land on Red 1/5 times.

<u>If the spinner is spun 40 times, then it should land on Red:</u>

  • 1/5*40 = 8 times

<u>And it should not land on red:</u>

  • (1 - 1/5)*40 = 4/5*40 = 32 times

Correct choice is D

3 0
2 years ago
SLFJ SDFNEFS LF A SF IE FJS VS IKF DSFNIS DSF
avanturin [10]

Answer:

40

Step-by-step explanation:

I think but what do you mean???!!!!

6 0
2 years ago
An angle is 21 degree more than twice its complement find it
jekas [21]

Answer: 67°

Step-by-step explanation:

Complementary angle refers to the angle that when added together will be equal to 90°.

Let the measurement of the angle's complement be x.

Therefore, the angles are x and 2x + 21. Since it's a complementary angle, therefore,

x + 2x + 21 = 90

3x + 21 = 90

3x = 90 - 21

3x = 69

x = 69°/3

x = 23°

Therefore, the angle will be:

= 2x + 21

= 2(23°) + 21°

= 46° + 21°

= 67°

The angle is 67°.

5 0
3 years ago
Give an example of an equation with an infinite number of solutions. Then make one change to the equation so that it has no solu
mrs_skeptik [129]
Two equations with infinite solutions would look the exact same. Example:
y=mx+b
y=mx+b
Example 2
y=2x+5
y=2x+5
For an equation with no solution they would have the same slope but different y intercepts. An equation with same slope and same y intercepts would have infinite solutions. 
5 0
3 years ago
Other questions:
  • James baked 5 1/4 dozen peanut butter cookies and 4 5/6 dozen oatmeal cookies for a bake sale what was the number of dozen cooki
    15·1 answer
  • What are the values of the7's in 17,372
    7·1 answer
  • Which property is used in the problem below? 2(x+4)=2x+8 the associative property the commutative property the distributive prop
    14·2 answers
  • What is the discriminant and the roots of <br>2x² - 10x + 8 = 0?​
    9·2 answers
  • Item 5 Solve for b. − 1 3 b=9 What is the answer?
    12·2 answers
  • Five percent of all vcrs manufactured by a large electronics company are defective. a quality control inspector randomly inspect
    15·1 answer
  • a model doll house is 3.25 feet long. the real house is 30 yards long. what is the unit rate that describes the relationship of
    10·1 answer
  • There are 49 vehicles in
    15·1 answer
  • What does the symbol "⊄" represent?
    12·2 answers
  • What is 2.73 divided by 30
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!