Plot the point on the polar coordinate system. ( − 3 , − 90 ° ) (-3,-90°) ( − 3 , − 90° )

Here we're asked to plot the point on the polar coordinate system, and the point that we're given is negative three, negative 90 degrees. So here I have an r value of negative three and a theta value of negative 90 degrees. Now remember when dealing with a negative angle, that means that we're measuring our angle clockwise rather than counterclockwise. So locating our angle first here, I know that I need to go clockwise 90 degrees, which will end me up on this line here, one of my quadrantal angles. Now I need to go ahead and use that r value. But here, my r value is actually also negative. So here, that tells me that I'm not going to count out this way as I would for a positive r value, but rather in the opposite direction, in this case, up. So I'm going to count one, two, three, and I'm going to end up right here for this final point. Thanks for watching, and let me know if you have questions.

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0. Functions7h 54m

Introduction to Functions
16m

Piecewise Functions
10m

Properties of Functions
9m

Common Functions
1h 8m

Transformations
5m

Combining Functions
27m

Exponent rules
32m

Exponential Functions
28m

Logarithmic Functions
24m

Properties of Logarithms
36m

Exponential & Logarithmic Equations
35m

Introduction to Trigonometric Functions
38m

Graphs of Trigonometric Functions
44m

Trigonometric Identities
47m

Inverse Trigonometric Functions
48m

1. Limits and Continuity2h 2m

Introduction to Limits
41m

Finding Limits Algebraically
40m

Continuity
40m

2. Intro to Derivatives1h 33m

Tangent Lines and Derivatives
30m

Derivatives as Functions
14m

Basic Graphing of the Derivative
23m

Differentiability
26m

3. Techniques of Differentiation3h 18m

Basic Rules of Differentiation
39m

Higher Order Derivatives
12m

Product and Quotient Rules
55m

Derivatives of Trig Functions
40m

The Chain Rule
49m

4. Applications of Derivatives2h 38m

Motion Analysis
36m

Implicit Differentiation
27m

Related Rates
59m

Linearization
13m

Differentials
21m

5. Graphical Applications of Derivatives6h 2m

Intro to Extrema
23m

Finding Global Extrema
50m

The First Derivative Test
1h 6m

Concavity
1h 1m

The Second Derivative Test
31m

Curve Sketching
44m

Applied Optimization
1h 25m

6. Derivatives of Inverse, Exponential, & Logarithmic Functions2h 37m

Derivatives of Exponential & Logarithmic Functions
1h 52m

Logarithmic Differentiation
20m

Derivatives of Inverse Trigonometric Functions
24m

7. Antiderivatives & Indefinite Integrals1h 26m

Antiderivatives
17m

Indefinite Integrals
25m

Integrals of Trig Functions
15m

Initial Value Problems
27m

8. Definite Integrals4h 44m

Estimating Area with Finite Sums
42m

Riemann Sums
1h 21m

Introduction to Definite Integrals
22m

Fundamental Theorem of Calculus
37m

Average Value of a Function
21m

Substitution
1h 19m

9. Graphical Applications of Integrals2h 27m

Area Between Curves
1h 18m

Introduction to Volume & Disk Method
1h 8m

10. Physics Applications of Integrals 3h 16m

Kinematics
1h 13m

Work
2h 3m

11. Integrals of Inverse, Exponential, & Logarithmic Functions2h 34m

Integrals of Exponential Functions
40m

Integrals Involving Logarithmic Functions
58m

Integrals Involving Inverse Trigonometric Functions
55m

12. Techniques of Integration7h 41m

Integration by Parts
2h 32m

Partial Fractions
4h 29m

Improper Integrals
39m

13. Intro to Differential Equations2h 55m

Basics of Differential Equations
48m

Slope Fields
19m

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22m

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1h 25m

14. Sequences & Series5h 36m

Sequences
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Review of Factorials
11m

Series
44m

Convergence Tests
3h 17m

15. Power Series2h 19m

Introduction to Power Series
1h 9m

Taylor Series & Taylor Polynomials
1h 10m

16. Parametric Equations & Polar Coordinates7h 58m

Parametric Equations
1h 6m

Calculus with Parametric Curves
1h 13m

Polar Coordinates
2h 5m

Calculus in Polar Coordinates
55m

Conic Sections
2h 36m

16. Parametric Equations & Polar Coordinates

Polar Coordinates

Calculus

16. Parametric Equations & Polar Coordinates

Polar Coordinates

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Multiple Choice

Plot the point on the polar coordinate system.
$(-3,-90°)$

Polar coordinate system showing point (-3, -90°) plotted in red.

Polar coordinate system showing point (2, 0°) plotted in red.

Polar coordinate system showing point (3, 90°) plotted in red.

Polar coordinate system showing point (3, -90°) plotted in red.

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Verified step by step guidance

Step 1: Understand the polar coordinate system. In polar coordinates, a point is represented as (r, θ), where 'r' is the radial distance from the origin and 'θ' is the angle measured counterclockwise from the positive x-axis.

Step 2: Analyze the given point (-3, -90°). The negative radial distance (-3) indicates that the point is located in the opposite direction of the angle -90°. The angle -90° corresponds to the negative y-axis in standard polar coordinates.

Step 3: Adjust the negative radial distance. To plot the point, convert the negative radial distance to a positive one by adding 180° to the angle. This transforms the point (-3, -90°) to (3, 90°).

Step 4: Locate the angle 90° on the polar coordinate system. The angle 90° corresponds to the positive y-axis. Identify the radial distance of 3 units along this direction.

Step 5: Plot the point (3, 90°). Starting from the origin, move 3 units along the positive y-axis to mark the point on the polar coordinate system.