A man on the top of a tower standing on the seashore find that a boat coming towards him takes 10 minutes for the angle of depression to change from 30 degree to 60 degree how soon the boat reach the sea shore
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A man on the top of the tower, standing in the seashore finds that a boat coming towards him makes 10 minutes to change the angle of depression from 30 to 60. How soon will the boat reach the seashore. enter image description here
My Attempt, We know, Speed =dist.time =CD10.
Also, Tan60=ABBC 3–√=ABBC AB=3–√BC.
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