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
zheka24 [161]
2 years ago
10

What is the solution to the trigonometric inequality 2sin(x)+3>sin^2(x) over the interval 0<=x<=2pi radians?

Mathematics
1 answer:
devlian [24]2 years ago
7 0

2 sin(x) + 3 > sin²(x)

can be rewritten as

sin²(x) - 2 sin(x) - 3 < 0

(sin(x) - 3) (sin(x) + 1) < 0

The left side is equal to zero when either

sin(x) - 3 = 0   or   sin(x) + 1 = 0

sin(x) = 3   or   sin(x) = -1

The first case can never happen for real x, since |sin(x)| ≤ 1. From the second case, we get one zero in the interval 0 ≤ x ≤ 2π at x = 3π/2.

Now, split up the solution domain into two intervals, and check the sign of the left side of the inequality at some point in the interval. If the inequality holds up, that interval will belong to the solution set for the inequality.

• From 0 ≤ x < 3π/2, take x = 0. Then

sin²(0) - 2 sin(0) - 3 = 0² - 0 - 3 < 0

is true.

• From 3π/2 < x ≤ 2π, take x = 2π. Then

sin²(2π) - 2 sin(2π) - 3 = 0² - 0 - 3 = -3 < 0

is also true.

This means both intervals 0 ≤ x < 3π/2 and 3π/2 < x ≤ 2π satisfy the inequality.

You might be interested in
Explain Long division in your own words using at least 3 sentences.
Marina86 [1]

Answer:

form of devision that takes longer bc it a fraction or decimal. first you want to get rid of the decimals. then devide the numbers from the lowest to the highest

I may be wrong been for ever since I did it on paper

4 0
2 years ago
Read 2 more answers
Solve for x: x - 6 ≤ 3
Mars2501 [29]

Answer:

x≤ 9

Step-by-step explanation:

add 6 to the other side to get x by itself....

8 0
3 years ago
PLZ AMSWER FULLY! <br><br> ****NEED DONE ASAP****
julia-pushkina [17]

Answer:

1. Josh's father: f  Josh: f/2 - 2

2. f + (f/2 - 2) ≥ 49

3. 3/2 f - 2 ≥ 49

   3/2 f ≥ 51

   3f ≥ 102

   f ≥ 34

4. 34

6 0
3 years ago
Use the points in the diagram to name the figure.
Viefleur [7K]

D) Line JK

<----->

JK

<em>H</em><em>o</em><em>pe </em><em>it </em><em>helps </em><em>:</em><em>)</em>

3 0
2 years ago
I really need help with this 6th grade work due today
DIA [1.3K]

5

Step-by-step explanation:

Length (L) = u

Breadth (b) = 6 mi

Perimeter (P) = 22 miles

Now we know

P = 2 (L+ b)

22 = 2 ( u + 6)

11 = u + 6

11 - 6 = u

u = 5

8 0
2 years ago
Read 2 more answers
Other questions:
  • Explain why the following quotient is incorrect: <br><img src="https://tex.z-dn.net/?f=1%2C000%20%5Cdiv%205%20%3D%202%2C000" id=
    11·1 answer
  • What is the answer to this equation
    5·1 answer
  • In a fruit cocktail, for every 30 ml of orange juice you need 20 ml of apple juice and 50 ml of coconut milk. What proportion of
    9·1 answer
  • Which graph represents the function ) = -2-1
    11·1 answer
  • 742 hard boiled egg into cartons for a community farm fundraiser. Each carton holds 12 eggs.
    13·1 answer
  • Find the measure of x<br><br> A. x=2<br> B. x = 6<br> C. x=8<br> D. X=10
    12·1 answer
  • Triangle town wants to build a school that is equidistant from its three cities L, M, and N. Which construction correctly finds
    14·1 answer
  • Angel and Jayden were at track practice. The track is 2/5 kilometers around.  Angel ran 1 lap in 2 minutes.  Jayden ran 3 laps
    5·2 answers
  • Marry leaves her house at 12:17 pm. Walks to the library, which takes her 14 minutes, and remains there for 3 hours and 27 minut
    15·1 answer
  • Lin has a drawing with an area of 12 in2. If she increases all the sides by a scale factor of 5, what will the new area be?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!