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Plese give the answer....

Plese give the answer....
 

Question Image
Grade:12

1 Answers

Ashish Gupta IIT Roorkee
askIITians Faculty 12 Points
7 years ago
tan \Theta = Ey/Ex = [k\lambda /d (cos \alpha - cos\beta )] / [k\lambda /d (sin\beta + sin\alpha )] = cos 90 - cos 60 / sin 60 + sin 90 = -1 / (2+ root3)Hence, answer is D

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