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
Answer 4. Pls pls ASAP ASAP pls ASAP please ASAp
vlabodo [156]

Answer:

56 in2

Step-by-step explanation:

14x8x1/2 (1/2 because a trapezoid formula divides by 2)

112x1/2

=56

8 0
2 years ago
Please help. 10 points. Please do not guess. Guesses will be reported. Thanks
Allushta [10]

The intersecting secant-tangent theorem says that

AP^2=PT\cdot TO

where T is the point at which line segment PO touches the circle. Similarly,

BP^2=PT\cdot TO

so we have

AP^2=BP^2\implies AP=BP

OP is of course as long as itself, and AO and BO are radii of the same circle so they have the same lengths.

This means triangles APO and BPO are congruent, which means angles APO and BPO are congruent, so angle APB is bisected by PO.

8 0
3 years ago
Who discovered the world's smallest Glacier
dalvyx [7]
Me, i discovered it.
6 0
3 years ago
Complete the table of pork sandwiches to chicken
denis-greek [22]

Step-by-step explanation:

Pork sandwiches: 2 , 6 , 10 , 14

goes by 4

Chicken Sandwiches: 5 , 15 , 25 , 35

goes by 10

4 0
3 years ago
What is 15 percent of 50
gulaghasi [49]
15% x 50 = 7.5
You can search these up in a calculator or in google if you want. The answers should be online.
5 0
3 years ago
Other questions:
  • What is the solution of this system of linear equations? 3y = x + 6 y – x = 3
    15·1 answer
  • Negative 4 times -3/2
    11·2 answers
  • Sarita showed the steps to solving the equation. 5 (x minus 3) + 7 (x + 4) = 73 Steps Sarita's Solution Sarita's Verification 1
    15·2 answers
  • Which of the following is a factor of 7x^2 -12x-4?
    9·2 answers
  • The science club is going to the space museum. The club consists of 27 students.
    5·1 answer
  • What is the measurement of angle 2?
    10·1 answer
  • On a thermometer, how many times farther below the freezing point of water (0°C) is the January low for Nuuk than the August low
    15·1 answer
  • Ally made 60 donuts on Friday. She made 3x donuts on Wednesday and 2x donuts on Thursday. How much donuts did she make in all?
    7·1 answer
  • 2 &lt; 17 ÷ e what is the E?<br><br> 3<br> 1<br> 7<br> 4<br> none of the above
    5·1 answer
  • Multiple Choice
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!