heydisr
21.10.2020 •
Mathematics
The reflector of a flashlight is in the shape of a parabolic surface. The reflections of all rays from the light bulb to any point on the parabolic surface will all be parallel to each other. The casting has a diameter of 16 centimeters and a depth of 8 centimeters. Find the focus to determine how far the light bulb should be placed from the vertex.(1 point) The light bulb should be placed how many centimeter(s) from the vertex.
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Ответ:
Answer is in the photo. I can't attach it here, but I've uploaded it to a file hosting. link below! Good Luck!
cutt.ly/Kzv78uJ