Unit One:
Unit Two:
section_dos.odp | |
File Size: | 1343 kb |
File Type: | odp |
Unit Three:
Law Of Sines:In the following problem we use the law of sines in order to find the remaining unknown angles. We don't know what Q1, Q2, R, or P. Using the correct formula, we find that we use 10 as our A ( you can label your triangle with the "HOA" format). With the angle of 56 degrees, then you can use the opposite side which is 12, over Sin Q because that is what we're trying to find. You multiply sin 56 degrees, so you have a better rearranged format, all that follows is putting what you got into the calculator. You may use the inverse of angle Q to change it to degrees, WE HAVE FOUND Q! However we aren't done, we still need to find the rest of the values, but now that we have Q it's much easier because all we do is subtract ( knowing that a triangle is usually equal to 180 degrees, by subtracting we find out that the remaining degrees should be 39.8, we have found angle R! We can now plug this into the formula like we did the first time, but now using our new angle to find r, follow the same steps. We have a final answer of 7.72 and all previously unknown values are now found.
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Law Of Cosines:The Law Of Cosines is completely different than the Law Of Sines. We have a new set of formulas to work with for problems relating to Cosines, it's fairly simple. Use the formula that best resonates with the problem, it's similar to the pythagorean theorem formula :
As you can observe they look almost identical except for a few differences here and there, such as the addition of -2abcosC, and the rearrangement of the c,a, and b. Moreover, a Cosine problem will require the use of this formula, we know that our degree is 47, our "a" is equal to 10, and our "b" is 9, all we do now is plug in and solve! Make sure to square root at the end to get rid of that power of two!
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Unit Four:
sectioncuatro.odt | |
File Size: | 21 kb |
File Type: | odt |