Question: You are sitting in a classroom next to the wall looking at the blackboard at the front of the room. The blackboard is 12 ft

You are sitting in a classroom next to the wall looking at the blackboard at the front of the room. The blackboard is 12 ft long and starts 3 ft from the wall you are sitting next to. Show that your viewing angle is cot-1 X 15 a = cot cot 1x 3

if you are x ft from the front wall.

cot-1 X 15 a = cot cot 1x 3

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We know that Tan 12 3 x 15 x 1 and Tan 3 x 2 from the below figure Hence from 1 and 2 ... View full answer

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