A lamp with a parabolic reflector is shown in the figure. The bulb is placed at the focus and the focal diameter is 4 cm. (Assume the vertex O is at the origin. Let the x-axis be horizontal and the y-axis be vertical.) 2 cm 24 cm F12 cm •D (a) Find an equation of the parabola. (b) Find the diameter d(C, D) of the opening, 24 cm from the vertex. (Round your answer to the nearest whole number.) cm
A lamp with a parabolic reflector is shown in the figure. The bulb is placed at the focus and the focal diameter is 4 cm. (Assume the vertex O is at the origin. Let the x-axis be horizontal and the y-axis be vertical.) 2 cm 24 cm F12 cm •D (a) Find an equation of the parabola. (b) Find the diameter d(C, D) of the opening, 24 cm from the vertex. (Round your answer to the nearest whole number.) cm
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter7: Conic Sections
Section7.1: Parabolas
Problem 61E: Parabolic Reflector A lamp with a parabolic reflector is shown in the figure. The bulb is placed at...
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