Adam S. answered • 08/31/16

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The ladder, wall and ground will form a right triangle, with a base 1.5 m and then angle between the hypotenuse and base 45

^{º}36^{′}.The cosine of the angle will equal the length of the base over the hypotenuse.

cos(45

^{° }36^{’}) = 1.5/H.solve for H.