. For best illumination of a piece of art, a lighting specialist for an art gallery recommends that a seiling mounted light be 3 meter from the piece of art that the angle of depression of the light be 300. How far from a wall should the light be placed so that the recommendations of the specialist are met? Notice that the art extends outward 10 cm from the wall. a. 2.7cm b. 1.8cm c. 3.9cm d. 3.1cm
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Answer:
1 2 e 3 hdknn kjhg mjfr kkr f jfr.
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cos¢= ad/ hy
cos 30 = x/3
√3/2=x/3
3√3/2 = x
3(1.732)/2= x
5.196/2=x
2.7 m =x
hence solved
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