A ladder leaning against a wall makes a 60° angle with the ground. The base of the ladder is 4m from the building. How high above the ground is the top of the ladder?
The ladder would be the hypotenuse of a right triangle with a known angle of 60 degrees and adjacent side of length 4m, so the opposite side of the right triangle or height can be determined by the tangent function by the relationship tangent of sixty degrees equals opposite over adjacent. The height would then be tan(60) multiplied by the adjacent length 4m.
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Hypotenuse is the slanted ladder, the wall is unknown and the ground length is the adjacent, or next to
Tan is tangent, its on your calculator and you multiply the angle by tan then multiply the result with 4
Or you can draw the picture and see that you have an Angle-Side-Angle problem|dw:1379909271598:dw| and then check out this site for how to solve ASA problem or AAS but never retrice
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