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
Maru [420]
3 years ago
9

Pleaseee help guys:(

Mathematics
2 answers:
nadya68 [22]3 years ago
8 0
≈0.524094
If you ever needed help with math you can download Photomath too that’s what I use
nadezda [96]3 years ago
7 0

Answer:

-\sqrt{3} /2

Step-by-step explanation:

Note that this looks like the identity:

cos(A + B) = cosAcosB - sinAsinB.

In this case, A = π/12 and B = 3π/4. So, we can say that the given equation:

cos(π/12)cos(3π/4) - sin(π/12)sin(3π/4) = cos(π/12 + 3π/4) = cos(π/12 + 9π/12) = cos(10π/12) = cos(5π/6)

Ah, now we have a trigonometry problem we can easily solve!

cos(5π/6) = -cos(π/6) = -(√3)/2

Hope this helps!

You might be interested in
The figure is not drawn to scale.
Goryan [66]

Answer:

93°, 89°, 93°

Step-by-step explanation:

∠1 and ∠4 are supplementary angles:

m∠1 + m∠4 = 180°; m∠1 = 93°

∠2 and ∠4 are vertical angles:

m∠2 = m∠4 = 87°

∠3 and ∠4 are supplementary angles:

m∠3 + m∠4 = 180°; m∠3 = 93°

4 0
3 years ago
Read 2 more answers
2. Find the value of x for which l | | m.​
joja [24]
2x-5=95 due to the alternate interior angles thm so you just add 5 to 95 to get 2x=100 then divide by 2 to get x=50!
7 0
3 years ago
For a horizontal launch (θ0 = 0) at a fixed height ℎi > 0, are the statements below correct? (Assuming friction can be ignore
Marizza181 [45]

Answer:

1) False. 2) True. 3) True. 4) False.

Step-by-step explanation:

1) False. The force of gravity will drive it down. The path will form a parabola.

2) True. There is no variation in the velocity in the horizontal axis and no force applied so the acceleration is zero.

3) True. The travel time depends on the height and the acceleration of gravity, and independent of the velocity of the rocket at launch.

4) False. The travel distance depends on the initial velocity of the rocket (at launch).

5 0
3 years ago
(2+3)*38-84+48937 divided by 2
lutik1710 [3]
The answer is 491449/2
6 0
3 years ago
Read 2 more answers
Sara is 9 years younger than her brother, Michael. The sum of their ages is 47 years. How old is Sara and how old is her brother
kotykmax [81]

Answer:

Michael is 38 and Sara is 29

Step-by-step explanation:

Because it says the sum of their age is 47 you do 47-9=38 so that would be Michael's age and than because Sara is 9 years younger than him and then you would do 38-9=29

7 0
3 years ago
Other questions:
  • Jacob helps paint a square mural in his classroom. Then he helps paint a mural in the hallway whose length is 6 feet longer and
    7·2 answers
  • What is the circumference. of the circle use 22/7 for pi<br><br>please help :(
    10·2 answers
  • What is the factored form of x2 − 4x − 5?
    8·2 answers
  • Thx for helping good luck
    15·1 answer
  • The vertices of a quadrilateral in the coordinate plane are known. How can the perimeter of the figure be found?
    9·2 answers
  • 2 Find the area of the shape. Either enter an exact answer in terms of it or use 3.14 for it and enter your answer as a decimal.
    13·1 answer
  • Which expression is equivalent to 2(8n)^4
    15·1 answer
  • ¿Por qué la luna no se sale de su órbita y siempre gira en torno a la tierra?
    7·2 answers
  • Helppppppppppppppppp pllllzzzzz<br> a<br> b<br> c
    10·2 answers
  • Round 50.341 to the nearest hundredth.<br><br><br><br><br> Can someone plz help me
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!