The New Job Applicant
Storyboard Text
- When would I need trig in construction?
- You listed on your resume that you have little to no experience with trig. This will be a problem if you were to work in construction with our company.
- I don't know.
- Take this example from one of our companies unfinished projects. These two poles are for a clothesline. The angle of elevation between them is 10 degrees and the distance is 25 feet. What is the lenght of wire needed to finish the clothesline.
- It is actually quite simple. In this problem you need to find the hypotenuse of a right triangle using an angle and a side lenght. You can use this equation, H=a/cos(theta). If you substitue this problems values into this equation you get H=25/cos(10). Simplifying this equation creates approximately 25.4 feet.
- ...
- Its simple. We can view this as a right triangle for which we know 2 sides, the hypotenuse and a side. The angle we need is opposite the non-hypotenuse side so using Soh-Cah-Toa I know the sin function is applicable. For this problem however, we will take the inverse sin of sin^-1 of 2/4. This gives us 30 degrees. therefore the angle of elevation neccesary is 30 degrees.
- He is yet another example. The sloped section of the roof of this house was built with 4 meter long boards. We needed the peak of the roof to be 2 meters higher than the starting point. What angle of elevation did we need to use to accomplish this?
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