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
Alex_Xolod [135]
3 years ago
12

ANSWERRRR QUICKKKK PLEASEEEE

Mathematics
1 answer:
Brums [2.3K]3 years ago
6 0

Answer: sqrt(2)/2  which is choice D

======================================================

Explanation

(3pi/4) radians converts to 135 degrees after multiplying by the conversion factor (180/pi).

The angle 135 degrees is in quadrant 2. We subtract the angle 135 from 180 to find the reference angle

180-135 = 45

Then you can use a 45-45-90 triangle to determine that the ratio of opposite over hypotenuse is sqrt(2)/2

sine is positive in quadrant 2

------------

Alternatively, you can use a unit circle. Refer to the diagram below. In red, I've circled the angle 3pi/4 radians. The terminal point for this angle has a y coordinate of sqrt(2)/2

Recall that y = sin(theta).

You might be interested in
Rosana construindo um galinheiro no fundo de sua residencia utilizou 4 galoes para o transporte do material. Um dos galoes era f
LiRa [457]
Question: Rosana building a chicken coop at the bottom of your residencia used 4 gallons for the transport of the material. One of gallons was fragile and not make it. What gallon not stand it?                                                                   (a) the water
(b) the mass of c the brita
(d) the sand                                                                                                            Answer: B) the mass of c the brita 
7 0
2 years ago
Write an exxpression to represent nine minus the quoitient of two and a number x
Bond [772]

Answer:

9-(2/x)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How do i find the value of a variable?
photoshop1234 [79]

To find the value of a variable you must know the basics of pre-Algebra.


Example:


2x+9=39


To find he answer of this you must subtract 9 from both sides

Then you are left with…


2x=30

Since 2x=30 means 2 times x equals 30

You can divide 2 from both sides to find the answer

Which is…

x=15



5 0
2 years ago
the ratio of dogs to cats at the pet store is 2:5. if there are 14 total pets how many dogs and cats are there
anygoal [31]

Hi ;-)

2x ⇒ dogs

5x ⇒ cats

2x + 5x = 14

7x = 14  / : 7

x = 2

2 · 2 = <u>4 dogs</u>

5 · 2 = <u>10 cats</u>

6 0
2 years ago
Verify the identity. sin(3pi - x) = sinx
fgiga [73]

we use the angle- sum and difference trigonometric identity to simplify the expression sin(3pi - x). This is equal to sin 3 pi cos x - cos 3 pi sin x. In this case, sin 3 pi  is equal to zero while cos 3 pi is equal to -1. Hence the answer simplified is equal to sin x .
7 0
3 years ago
Other questions:
  • Which shows one way to determine the factors of x3 – 9x2 + 5x – 45 by grouping?
    10·1 answer
  • Three times the quantity five less than x, divided by the product of six and x
    10·1 answer
  • Which rectangles have the same perimeter?
    8·2 answers
  • TRUE OR FALSE!
    6·2 answers
  • I don’t understand how to do this? Can someone explain this to me?
    11·1 answer
  • The area of a circle is 452.39 ft^2 . Why would the diameter have to be?
    15·2 answers
  • Alana’s baby brother weighed 137 oz when he was born. What is his weight in pounds<br> and ounces?
    8·1 answer
  • In 2016, Stare A produced 600 million pounds more apples that State B. Together, the two states produced 1600 million pounds of
    8·1 answer
  • The question is in the image. Thanks!
    9·1 answer
  • A student on the cross- county team runs 30 minutes a day as a part of her training. Write an equation to describe the relations
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!