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
pickupchik [31]
2 years ago
12

Sin2alpha+cos2alpha-cos6alpha/sin4alpha+2sin²alpha-1 if alpha is -135°​

Mathematics
1 answer:
balandron [24]2 years ago
5 0

Answer:

=  \frac{\sin(2 \alpha )  +  \cos(2 \alpha )  -  \cos(6 \alpha ) }{ \sin(4 \alpha )  + 2 { \sin }^{2}  \alpha  - 1}  \\  =  \frac{ \sin( - 270) +  \cos( - 270)  -  \cos( - 810)  }{ \sin( - 540)  + 2 { \sin }^{2}( - 135) - 1 }  \\  =  \frac{1}{ - 2}  \\  =  - 0.5

You might be interested in
Select the objects that hold the same amount of liquid as a 98 fluid ounce jug
Tema [17]
To answer this question, you need to know how many fluid ounces are in a pint and in a quart.  None of the choices reflect 98 fl oz, so I showed the ones that would hold 96 fluid ounces.

1 cup = 8 fl oz
2 cups = 16 fl oz
1 pint = 2 cups, so 1 pint also equals 16 fl oz.

2 pints equal 1 quart, so 16 x 2 = 32 oz (the number of fluid ounces in a quart)

1 pint - 16 fl oz
1 quart = 32 fl oz

Choice A: 3 quarts x 32 =96 fl oz.
Choice B: 2 quarts x 32 = 64 fl oz
Choice C: 2 quarts  x 32 + 2 pints x 16 = 64 + 32 (96 fl oz)
Choice D: 1 quart x 32 + 8 cups x 8 = 32 + 64 (96 fl oz)
Choice E: 2 cups x 8 + 2 pints x 16 = 16 + 32 (48 fl oz)
6 0
3 years ago
A cruise ship travels 20 miles in 50 minutes. How far does it travel in one minute?​
Marina CMI [18]

Answer:

0.4 miles

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What are the common factors of 8 and 16
julia-pushkina [17]
The common factor of 8 and 16 are 1, 2, 4, and 8.
5 0
2 years ago
Read 2 more answers
Need help with graphing
astraxan [27]
Plot these points
vertex: (-4,-7)
x intercepts: (-5.5,0), (-2.5, 0)
and those two other points
the graph should look something like this:

3 0
3 years ago
What is the simplest form of 96/64
Ray Of Light [21]
So its a fraction all you would do is divide 96 by 64 and you would 1 and one half
 
3 0
3 years ago
Read 2 more answers
Other questions:
  • If 75% is 60, what is the full cost?
    8·2 answers
  • When are absolute values and the opposite of a rational number equal
    6·2 answers
  • The graphs of linear function f and g are shown on the grid. Which function is best represented by the graph of g
    8·1 answer
  • What is the value of 2X^2 +4y if x=-2 y =3
    7·2 answers
  • Find the GCF OF EACH PAIR OF NUMBERS 40 and 48
    15·1 answer
  • on Monday, Mr. James used 25 2/3 ft of material to make placemats. if each placemat required 3 1/4 ft. of material, how many pla
    15·1 answer
  • 3/4+1/2= 2. 5/6+1/2= 3. 3/6+1/2= 4.1/6+4/8= 5.7/8+1/4= 6.3/8+1/2=
    7·1 answer
  • Please help me solve this.
    13·1 answer
  • What is the area of a hexagon inscribed in a circle with a diameter of 8
    7·1 answer
  • What is the slope of the line tangent to the graph of y = (9x^2)/(x+2) at x = 1 ?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!