AnswersPrecalculusSolving Trigonometric Inequalities

Solving Trigonometric Inequalities Answers

0 verified answers
2
Free Preview

To solve the trigonometric inequality , Carl graphed the equations and . Shelly, on the other hand, took the cube root of both sides of the inequality so that it became , and she then graphed the equations and . Which of the following statements is true regarding the points of intersection of Carl’s graph and Shelly’s graph?

Question illustration
A
The points of intersection of Carl’s graph have different x-coordinates than the points of intersection of Shelly’s graph and different y-coordinates.
B
The points of intersection of Carl’s graph have different x-coordinates than the points of intersection of Shelly’s graph but the same y-coordinates.
C
The points of intersection of Carl’s graph have the same x-coordinates as the points of intersection of Shelly’s graph but different y-coordinates.
D
The points of intersection of Carl’s graph have the same x-coordinates as the points of intersection of Shelly’s graph and the same y-coordinates.
3

Which trigonometric inequality has no solution over the interval radians?

Question illustration
A
cosecant (x) minus 1 is greater than 0
Option A
B
cosine (x) minus 1 is greater than 0
Option B
C
cotangent (x) minus 1 is greater than 0
Option C
D
tangent (x) minus 1 is greater than 0
Option D
4

The graph below can be used to help solve which of the following trigonometric inequalities over the interval radians?

Question illustration
A
5 cosine (x) minus 7.5 is greater than equal to 6 cosine (x) minus 7
Option A
B
5 sine (x) minus 7.5 is greater than equal to 6 sine (x)minus 7
Option B
C
5 sine (x) minus 7 is greater than equal to 6 cosine (x) minus 7.5
Option C
D
5 sine (x) minus 7 is greater than equal to 6 sine (x) minus 7.5
Option D
6

Which of the following is part of the solution to the trigonometric inequality over the interval radians?

Question illustration
A
StartFraction pi over 6 EndFraction
Option A
B
StartFraction pi over 2 EndFraction
Option B
C
StartFraction 2 pi over 3 EndFraction
Option C
D
StartFraction 3 pi over 2 EndFraction
Option D
7

The graph below can be used to help solve which of the following trigonometric inequalities over the interval radians?

Question illustration
A
cosine (x) is greater than equal to minus 1
Option A
B
cosine (x) minus sine (x) is greater than equal to minus 1
Option B
C
sine (x) is greater than equal to minus 1
Option C
D
sine (x) minus cosine (x) is greater than equal to minus 1
Option D
9

The graph below can be used to help solve which of the following trigonometric inequalities over the interval radians?

Question illustration
A
sine (x) minus 1 is less than equal to cosine (2x) minus 2
Option A
B
sine (x) minus 1 is less than equal to cosine (2x) plus 2
Option B
C
sine (2x) minus 1 is less than equal to cosine (x) minus 2
Option C
D
sine (2x) minus 1 is less than equal to cosine (x) plus 2
Option D
10

To help solve the trigonometric inequality , Tracey successfully graphed the equations and with her graphing calculator. Which of the following statements is true about the inequality?

Question illustration
A
There is no solution because even though you cannot see it, the graph of the equation is above the graph of the equation for all values of x.
Option A
B
There is no solution because the graph of the equation is the same as the graph of the equation , so is never below .
Option B
C
There are an infinite number of solutions because even though you cannot see it, the graph of the equation is below the graph of the equation for all values of x.
Option C
D
There are an infinite number of solutions because the graph of the equation is the same as the graph of the equation , so is never below .
Option D

Did you find these answers helpful?