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
Gre4nikov [31]
2 years ago
10

given sin0= 2/3 and angle 0 is in quadrant 2, what is the exact value of cos0 in simplest form? simplify all radicals if needed

Mathematics
1 answer:
Kitty [74]2 years ago
4 0

Answer: ( -\sqrt{5} / 3)

Step-by-step explanation:

sin(angle) = opposite/hypotenuse

opposite =2

hypotenuse = 3

solve for adjacent side with pythagorean theorum

opposite^2 + adjacent^2 = hypotenuse^2

2^2 + adjacent^2 = 3^2

4 + adjacent^2 = 9

adjacent^2 = 9 - 4

adjacent^2 = 5

adjacent = \sqrt{5}

-\sqrt{5} since it is in the second quadrant

cosx = (adjacent/hypotenuse)

cosx = (-\sqrt{5}/3)

(-\sqrt{5}/3)

You might be interested in
How many different possible meal outcomes are there if you're having one item each from the main course, sides, and drink menu?
lyudmila [28]
Answer: 64
Explanation: 4^3
6 0
3 years ago
PLEASE HELP!! VERY IMPORTANT!!! THIS IS 10 POINTS !!! ILL MARK FIRST PERSON BRAINLIEST!
mezya [45]

Answer:

y=4x-2

Step-by-step explanation:

3 0
3 years ago
A songwriter gets paid monthly at a rate of $150 for each song he completes. Last month he wrote 8 songs and got halfway through
DaniilM [7]

Answer:

The answer would be 1275 if they get paid for half the money on the 9th song

Step-by-step explanation:

3 0
3 years ago
I need help with this question i dont feel like working it out please help :|
bezimeni [28]

Answer:

B. 26

Step-by-step explanation:

3 0
3 years ago
The center of a circle lies on _____.
algol [13]
<h2>Answer:</h2>

A) every diameter

<em>The center of a circle lies on </em><em>every diameter.</em>

<h2>Explanation:</h2>

B) The circle: A circle is a two-dimensional shape where all points are the same distance from the center. So this definition doesn't match the definition of the center of the circle. The center is just a point not several ones.

C) A tangent line: obviously this definition is false. A tangent line is a line not a point.

D) Every chord: A chord is any line segment between two points on a circle. The only chord that passes through is the diameter. So this definition does not include all the chords of a circle

A) Every diameter: This is the correct option! A diameter is any chord that <em>passes through the center</em>.

4 0
4 years ago
Other questions:
  • Let A (101, 202, 303, 404, 505) and B (101, 404). What is A n B?
    8·2 answers
  • For right triangle , triangle rst shown below, what is tan r
    11·1 answer
  • You open a bank account with an initial deposit of $45 and plan to increase the amount deposited by $23 per year. What will the
    8·1 answer
  • What is the value of the expression when a = 4, b = 3 ,and c = 10?<br><br> 3a/4b−c
    14·2 answers
  • Through any three points there exists exactly one line. A. always B. sometimes C. never
    8·1 answer
  • A company sells widgets. The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the
    5·1 answer
  • Onwuegbuzie et al. (1999) examined foreign-language anxiety as a predictor of foreign-language achievement. They performed a mul
    8·1 answer
  • Melanie needs to cut a carpet with two angles that each measure 80° and two angles that each measure 100°. Name the quadrilatera
    14·1 answer
  • Please help ASAP due 9:20, will give brainliest
    15·2 answers
  • What percentage of 5/2 hours is 15 minutes?​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!