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During a particularly boring class, you amuse yourself by trying to reflect a beam of sunlight off of the face of your wristwatch and onto the blackboard. To do this, you have to tilt your watch face just right, so that the incoming sunbeam, which makes an angle of 30° below the horizontal, reflects off the watch face and ends up traveling at an angle of 10° above the horizontal 30° 0 1.10⁰

During a particularly boring class, you amuse yourself by trying to reflect a beam of sunlight off of the face of your wristwatch and onto the blackboard. To do this, you have to tilt your watch face just right, so that the incoming sunbeam, which makes an angle of 30° below the horizontal, reflects off the watch face and ends up traveling at an angle of 10° above the horizontal 30° 0 1.10⁰

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question

At what angle T with respect to the horizontal should you tilt the face of your watch to reflect the light beam as shown?

 

A. 10°

B. 15°

C. 20°

D. 25°

E. 5°

 

Correct answer is A. I need help in understanding how to figure out the steps to arrive at the answer correctly. Thank you for your help!

During a particularly boring class, you amuse yourself by trying to reflect a beam of sunlight off of the face of your wristwatch and onto the blackboard. To do this, you have to tilt your watch face just right, so that the incoming sunbeam, which makes an angle of 30° below the horizontal, reflects off the watch face and ends up traveling at an angle of 10° above the horizontal 30° 0 1.10⁰
Transcribed Image Text:During a particularly boring class, you amuse yourself by trying to reflect a beam of sunlight off of the face of your wristwatch and onto the blackboard. To do this, you have to tilt your watch face just right, so that the incoming sunbeam, which makes an angle of 30° below the horizontal, reflects off the watch face and ends up traveling at an angle of 10° above the horizontal 30° 0 1.10⁰
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