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
mina [271]
3 years ago
13

Rewrite with only sin x and cos x. sin 3x - cos x

Mathematics
1 answer:
vova2212 [387]3 years ago
7 0

Answer:

sin(3x) = sin(x + 2x)

= sinx cos(2x) + cosx sin(2x)

= sinx [1 - 2sin2x] + cosx [2sinxcosx]

= sinx - 2sin3x + 2cos2xsinx

You might be interested in
When one quarter of a number is subtracted from one third of the number, the result is 7
Rzqust [24]
The number ... n
one quarter of the number ... 1/4 of n = 1/4 * n
one third of the number ... 1/3 of n = 1/3 * n
one quarter of the number is subtracted from one third of the number ... 1/3 * n - 1/4 * n
the result is 7 ... = 7

We can put it together: 
1/3 * n - 1/4 * n = 7
4/12 * n - 3/12 * n = 7
1/12 * n = 7     /*12
n = 7 * 12
n = 84

The number you are looking for is 84.
5 0
3 years ago
In 17 ​weeks, Bruce earns ​$5,644 doing yard work. He earns the same amount each week. Let b stand for the amount earned each we
Marrrta [24]
5,644 / 17 = b
b = 332
4 0
3 years ago
3x+6y=36 and -3x-6y=0​
Anastasy [175]

Answer:

No solution

Step-by-step explanation:

3x + 6y  =36

-3x - 6y =0​

------------------add

0 ≠ 36

No solution

4 0
3 years ago
The following graph shows a proportional relationship.
Nina [5.8K]

Answer:

1.5

Step-by-step explanation:

k=\frac{y}{x}\\\\k=\frac{6}{4}\\\\k=1.5

8 0
3 years ago
.......................................................................
Maslowich
Is this a glitch or I don’t see a question? I only see dots “……”
4 0
2 years ago
Other questions:
  • Find the arc length of a central angle of 90° in a circle whose radius is 4 inches
    13·1 answer
  • Find the values of m and b that will create a system of equations with no solution. Check all that apply.
    12·1 answer
  • which are the possible sides of a triangle ? a. 15, 9, 3 b. 6, 12, 19 c. 11, 6, 3 d. 4, 8, 10
    7·1 answer
  • Circle the correct term that makes the sentence true. The (greatest, least) of common factors of two or more numbers is the (gre
    8·1 answer
  • Find the value of y<br>if <br><img src="https://tex.z-dn.net/?f=%7By%7D%5E%7B2%7D%20%20%3D%20169" id="TexFormula1" title="{y}^{2
    14·1 answer
  • Winnie and pooh goes to the honey store to buy a case of honey for the winter.the case of 24 jars of honey cost $27.60.What is t
    6·2 answers
  • If r(x) = 3x – 1 and s(x) = 2x + 1, which expression is equivalent to (StartFraction r Over s EndFraction) (6)? StartFraction 3
    12·2 answers
  • PLEASE HELP 10 POINTS
    15·1 answer
  • Quotient 2 divided by 2 3
    11·1 answer
  • A radio tower is located on a coordinate system measured in miles. The range of a signal in a particular direction is modeled by
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!