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
KATRIN_1 [288]
2 years ago
7

Find cos theta if sin theta = 2/3. assume the terminal side of the angel falls in quadrant 2

Mathematics
1 answer:
kow [346]2 years ago
3 0
Well knowing that the terminal arm of the standard position angle is in quadrant 2, we can determine the reference angle, in quadrant 2, by simply taking the difference between 180 and whatever the angle is.

So ø reference = 180 - ø in standard position.

Regardless, the reference angle is in quadrant 2, we need to then label the sides of the reference triangle based on the opposite and hypotenuse.

Solve for adjacent side using Pythagoras theorem.

A^2 = C^2 - B^2
A^2 = 3^2 - 2^2
A^2 = 9 - 4
A^2 =5
A = sq root of 5.

Then write the cos ratio using the new side.

Cos ø =✔️5/3. Place a negative in front of cos ø as cos is negative in second quadrant.
You might be interested in
-1/2 + ( 3/4 x 4/9)
SIZIF [17.4K]

Answer:

-1/6

Step-by-step explanation:

-1/2 + ( 3/4 x 4/9)

PEMDAS says parentheses first

Rearranging the fractions

-1/2 + ( 3/9 x 4/4)

-1/2 + (1/3*1)

-1/2 + 1/3

Getting a common denominator of 6

-1/2 *3/3 + 1/3 *2/2

-3/6+2/6

-1/6

5 0
3 years ago
20 points!! Please help
Bas_tet [7]

Answer:

If the statement is true, lines a and b are parallel

Step-by-step explanation:

This is due to lines intersecting with line m at identical angles.

8 0
3 years ago
ILL GIVE BRAILY!!!
Rom4ik [11]

Answer:

Step-by-step explanation:

here A(-3,-2)

-3 is x and -2 is y

so use this formula to find A'

p(x,y)=p'kx,ky)

here k is a scale factor which is 1/2

A(-3,-2)=A'(1/2*-3.1/2*-2)

A'(-3/2,-1)

7 0
2 years ago
2y =17383 what is 2y please answer
aleksandrvk [35]
2y is 2y, so it is equal to 17383.
IF you were looking for just y, than the answer is 17383/2 = y = 8691.5
3 0
2 years ago
Read 2 more answers
In how many ways can 10 people be divided into three groups with 2, 3, and 5 people respectively?
Liula [17]

Answer:

2100

Step-by-step explanation:

In how many ways can a group of 10 people be divided into three groups consisting of 2,3, and 5 people?

First, you need to choose 4 people to fill the first group.

The number of ways is (104) which equals to 210.

Then, pick 3 more people out of the remaining 6 to be in the second group. And then, pick 3 more out of the remaining 3.

However, we need to divide it by 2, since we don’t really care on the order of selection of group.

(63)(33)/2=10

So, there are 210 x 10 = 2100 ways

6 0
2 years ago
Read 2 more answers
Other questions:
  • 9x) = 27^y and X-Y = -3/2<br> find the value of y
    5·1 answer
  • What is the area of the following polygon below?
    9·1 answer
  • PLEASE SOLVE NOW I WILL MARK BRAINLEST IF SOLVED
    14·1 answer
  • Harold took 5 hours to paint 3 same-sized walls. If he works at the same rate, how long will it take him to paint 18 walls of th
    7·2 answers
  • NEED HELP ASAP! 40 POINTS!
    13·2 answers
  • Please help this is due in 44 minutes!
    10·1 answer
  • Parallelograms don’t know how to solve and teacher won’t show me need help
    11·1 answer
  • 0<br> Draw the graph of y = 3 - 0.5x
    8·1 answer
  • Alyssa’s bank charges $0.15 for each check written, $0.25 per ATM transaction, and a monthly fee to maintain a checking account.
    11·1 answer
  • What are the zeros of the function f(x) = (2x +6)(x-4)?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!