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MATH / For real numbers t, the point

Problem

Answer published by the source. Consult the official source to check your work against its answer.

problem

For real numbers t,t, the point (x,y)=(cost,cos2t)(x,y) = (\cos t, \cos 2t)is plotted. All the plotted points lie on what kind of curve? (A) Line (B) Circle (C) Parabola (D) Ellipse (E) Hyperbola Enter the letter of the correct option.
Plain-text mathematical notation (without MathML)
For real numbers t, the point
(x,y)=(cost,cos2t)is plotted.  All the plotted points lie on what kind of curve?

(A) Line
(B) Circle
(C) Parabola
(D) Ellipse
(E) Hyperbola

Enter the letter of the correct option.
Original LaTeX notation
For real numbers $t,$ the point
\[(x,y) = (\cos t, \cos 2t)\]is plotted.  All the plotted points lie on what kind of curve?

(A) Line
(B) Circle
(C) Parabola
(D) Ellipse
(E) Hyperbola

Enter the letter of the correct option.

level

Level 2

type

Precalculus

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Source and history

task_id
91fe322b-f327-5d70-bfdf-da8a71e7278e
task_key
precalculus--test--91fe322b-f327-5d70-bfdf-da8a71e7278e
task_revision_id
1
config / split
precalculus / test

Official source

initial import