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
k0ka [10]
3 years ago
7

Cos(3pi/4)= HELLPPPP

Mathematics
1 answer:
Kitty [74]3 years ago
5 0
3π/4 angle is in the second quadrant, so cos (3π/4) is going to be negative.

Reference angle of 3π/4 is (π - 3π/4) = π/4

cos(π/4) = √2/2

cos (3π/4) = - √2/2

Answer is C.
You might be interested in
Write an equation in slope-intercept form for the line perpendicular to y=-3x + 9 that passes through the point (9,9)
son4ous [18]

Answer:

-8

Step-by-step explanation:


8 0
2 years ago
Find the 32nd term of the arithmetic sequence 32, 29, 26, 23, ...
Zinaida [17]

Answer:

-55

-61

064

63

Step-by-step explanation:

3 0
2 years ago
What is the volume of the following rectangular prism?
Mama L [17]

Answer:

.

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
NEED HELP FAST!!!!!!!!!!!!!!!!
avanturin [10]

Answer:


Step-by-step explanation:

Her assets will be her net worth minus her liabilities


35,000-9,500=25,500


5 0
3 years ago
Read 2 more answers
Find the instantaneous rate of change of the surface area s ! 6x2 of a cube with respect to the edge length x at x ! a
joja [24]

The instantaneous rate of change is simply equivalent to the first derivative of the equation or function. We are given the equation of Surface Area (A) with respect to side (x):

A = 6 x^2

Taking the first derivative of the equation:

dA = 12 x dx

dA / dx = 12 x

Now the term dA / dx is the instantaneous rate of change in the surface area with respect to the side length. To get the rate of change when the side x = a, simply plug this in into the equation:

rate of change = dA / dx = 12 x

so when x = a:

<span>rate of change = 12 a</span>

7 0
3 years ago
Read 2 more answers
Other questions:
  • Please help!!!!
    12·1 answer
  • Isotope mass (amu) abundance (%) 1 203.97304 1.390 2 205.97447 24.11 3 206.97590 22.09 4 207.97665 52.41 find the atomic mass of
    6·1 answer
  • In the year 1987, an investment was worth $29,800. In the year 1997, this
    7·1 answer
  • Using 3.14 for π, what is the volume of a ball with a diameter of 7 centimeters
    13·1 answer
  • Round 492.3069 to the nearest thousandth
    11·1 answer
  • -3x=24<br> A.)x=-8<br> b.)x=8<br> c.)x=27<br> d.)x=21
    5·1 answer
  • What percent is 45 out of 72?
    14·2 answers
  • An item has a listed price of $40 . If the sales tax rate is 3% , how much is the sales tax (in dollars)?
    9·1 answer
  • Is 15 a whole number <br> 1. yes<br> 2. no
    15·2 answers
  • Plz help I need help
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!