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
Andrews [41]
3 years ago
7

Add the sum and difference identities for sin x to derive 1/2 [sin(x+y)+sin(x-y)]=sin x cos y

Mathematics
1 answer:
Solnce55 [7]3 years ago
3 0

Answer:

true

Step-by-step explanation:

1/2 (sin(x+y)+sin(x-y))

= 1/2 (sin x cos Y + cos x sin y + sin x cos y - cos x sin y)

= 1/2 * 2 sin x cos y

= sin x cos y

The expression is true.

You might be interested in
What is -1 26/100 in simplest form
Alla [95]

-63/50



I think this is what you mean by simplest fom


5 0
3 years ago
i drink 10 liters of water on weekdays and 4 liters of water on the weekend how many liters of water i drink per day
MariettaO [177]
The answer is 40. Just multiply 10x4 and you get the answer
7 0
3 years ago
Consider the original triangle and its enlargement.
Ira Lisetskai [31]
12 cm to 24 cm
the scale factor is 2x
3 0
3 years ago
Read 2 more answers
Explain the difference between a public and Private company. is it better for a company to be public or private
Mumz [18]
In most cases, a private company is owned by the company's founders, management, or a group of private investors. A public company is a company that has sold all or a portion of itself to the public via an initial public offering.
3 0
3 years ago
one pipe fills a store pool in 12 hours. A second pipe fills the same pool in 6 hours. When a third pipe is added and all three
Alina [70]

Answer:

x  = 12  hours

Step-by-step explanation:

If one pipe fills store pool in 12 hours   in 1 hour will fill 1/12 of the pool

If one pipe fills a store pool in 6 hours in 1 hour will fill 1/6 of the pool

Let call " x " number of hours needed by the third pipe to fills the pool

then in 1 hour  will fill 1/x

The three pipes working together in 1 hour will fill

1/12  +  1/6  + 1/x

Now we know that the three pipes take 3 hours to fill the pool then in 1 hour three pipes will fill 1/3 of the pool, therefore

1/12  +  1/6  + 1/x  = 1/3

( x + 2*x + 12) /12*x  = 1/3   ⇒ ( 3*x +12 )/ 12*x = 1/3

9*x  + 36  = 12*x

- 3*x  = - 36

x  = 36/3

x  = 12  hours

5 0
3 years ago
Other questions:
  • S + 20= -14 3/5. <br><br><br><br>ps: 3/5 means a fration like 3 over 5
    15·1 answer
  • What is the solution of the equation
    7·1 answer
  • What is 9 and 10? What's the CORECT answer?
    5·1 answer
  • I need help doing -12 plus -12 as a world wide explanation
    8·1 answer
  • A young sumo wrestler decided to go on a special high-protein diet to gain weight rapidly and at a constant rate. After 8 88 mon
    15·1 answer
  • penguins have more feathers than most other birds, about seventy-two feathers per square inch. How many feathers would a penguin
    12·2 answers
  • Combine like terms:<br> 3x - 5y - 2x + 3 + 8y + 10
    9·2 answers
  • If Jasper can walk<br> 1/2<br> mile in 1/4 hour, how long will it take him to walk 1.5 miles?
    14·1 answer
  • Can u help with 11 pls. Thank u so much. P.S. sorry it's a little blurry.
    9·1 answer
  • Solve the problem algebraically. Clearly define all variables, write an appropriate equation, and solve.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!