Describe the graph of the equation. r = 18 sin 3ti - 18 cos 3t j O It is a circle of radius 18 in the xy-plane, with center at the point (3, 3). O It is a parabola in the xy-plane, with vertex at the origin. It is an ellipse in the xy-plane, centered at the origin, with major axis of length 18. It is a circle of radius 3 in the xy-plane, with center at the origin. O It is a circle of radius 18 in the xy-plane, with center at the origin.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.4: Plane Curves And Parametric Equations
Problem 15E
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Describe the graph of the equation.
r =
18 sin 3t i 18 cos 3t j
O It is a circle of radius 18 in the xy-plane, with center at the point (3, 3).
It is a parabola in the xy-plane, with vertex at the origin.
It is an ellipse in the xy-plane, centered at the origin, with major axis of length 18.
O
It is a circle of radius 3 in the xy-plane, with center at the origin.
O It is a circle of radius 18 in the xy-plane, with center at the origin.
Transcribed Image Text:Describe the graph of the equation. r = 18 sin 3t i 18 cos 3t j O It is a circle of radius 18 in the xy-plane, with center at the point (3, 3). It is a parabola in the xy-plane, with vertex at the origin. It is an ellipse in the xy-plane, centered at the origin, with major axis of length 18. O It is a circle of radius 3 in the xy-plane, with center at the origin. O It is a circle of radius 18 in the xy-plane, with center at the origin.
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