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
liraira [26]
3 years ago
15

Angle θ is in standard position. if sin(θ) = − 1/3, and π < θ < 3π/2 , find cos(θ).

Mathematics
2 answers:
Alexandra [31]3 years ago
8 0

Answer:

-2√2/3 is the correct answer. :))

Step-by-step explanation:

scoray [572]3 years ago
7 0
Use pythagorean theorem:
sin^2 + cos^2 = 1

(-1/3)^2 + cos^2 = 1
1/9 + cos^2 = 1
cos^2 = 8/9
cos = +- sqrt(8)/sqrt(9) = +- 2sqrt(2)/3

Determine whether cos is positive or negative by looking at which quadrant the angle is in.
pi < theta < 3pi/2 ---> this is 3rd quadrant where x or cos is negative

Therefore cos(theta) = -2sqrt(2)/3
You might be interested in
Explain how to draw a bar a player named Eric who scored 20 points
Hunter-Best [27]
Well you jus t split a box into 4parts and each box is worth 5
7 0
3 years ago
Standard form- 12 ten thousands, 8 thousands,14 hundreds,7 ones
Whitepunk [10]
129,407 because 12 ten thousands=120,0008 thousands= 8,00014 hundreds= 1,400No tens=07 ones=7
5 0
3 years ago
Anais bought 212 yards of ribbon. She had 1 feet 6 inches of ribbon left after trimming some curtains. How many inches of ribbon
victus00 [196]

Answer:

Step-by-step explanation:

3 0
3 years ago
What is the greatest value 20g of flour 3 for 3.50 or 40g of flour for 2 for 9£ which is better for money
jenyasd209 [6]

Answer:

It is better to buy 20 g of flour 3 for 3.50

Step-by-step explanation:

It is given that 20g of 3 for 3.50

It means 3 packets of 20 g is 3*20 =60

So, 60g  is for 3.50

So, 1 g =\frac{3.5}{60}=0.05833 per gram.

Now, let's find unit rate for 40 g of 2 for 9.

2 packets of 40 gram = 2* 40 =80 grams

So, 80 grams costs 9

So, 1 gram =\frac{9}{80} =0.1125

So, it is better to buy 20 g of flour 3 for 3.50

4 0
2 years ago
Cheryl and Marcus are going to make 2 batches of muffins. the smaller batch is 2/3 the size of the larger batch. the recipe for
MrMuchimi
The smaller batch is 2/3 of the large batch so anser is2/5

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the volume of the rectangular prism
    14·2 answers
  • Rick wants to buy a pound of almonds. If a 1-pound bag costs $6.15 and a 4-ounce bag costs $1.85, how much money would Rick save
    15·2 answers
  • Round 9245 to the nearest hundred
    10·1 answer
  • Which theorem proves ABC=DCB? Why?
    14·1 answer
  • What is 2 5/8 as an impropper fraction
    11·1 answer
  • Which ratio is equivalent to 3/7
    7·1 answer
  • Is it possible to construct a triangle with side lengths of 35,120, and 125 units?
    14·1 answer
  • Find the value of x.
    5·2 answers
  • If Samantha can make 6 bracelets in 1 hour and Payton makes 15 bracelets in 3 hours - what is the difference in the number of
    11·1 answer
  • Multi step equation help<br><br> 5n - 2 ( 2 -n ) = -7
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!