The ladder makes 79.92 degrees of angle with the ground (Calculation: Cos A = 7/40 = 0.175 resulting A = ACos 0.175 = 79.92 degrees). This problem can be solved by using a simple trigonometry formula of Cosine which stated Cos A = Adjacent/Hypotenuse. The ladder length of 40 feet is the hypotenuse side of the triangle and the 7 feet distance between the ladder's foot and the wall is the adjacent side<span>. </span>
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Thats false
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When you multiply by a power your basically multiplying that number b itself 10x except for 1
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d=√(x2-x1)² + (y2-y1)²
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ans is √85 unit
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55
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See picture attached
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