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A peacock sitting on the top of a tree of height 10 m observes a snake moving on the ground. If the snake is $10\sqrt{3}$ m away from the base of the tree, then angle of depression of the snake from the eye of the peacock is
- (a)$30^\circ$
- (b)$45^\circ$
- (c)$60^\circ$
- (d)$90^\circ$
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(A) $30^\circ$