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Mathematics 10 Online
OpenStudy (highschoolmom2010):

Find the value of each variable. If your answer is not an integer, express it in simplest radical form **check answer**

OpenStudy (anonymous):

Um... missing something?

OpenStudy (jdoe0001):

should we get popcorn while you type in the variables?

OpenStudy (highschoolmom2010):

yall patience is a virtue

OpenStudy (jdoe0001):

SOH CAH TOA

OpenStudy (jdoe0001):

sounds like the tune of a hawaiian song, but that's all you need http://www.mathwarehouse.com/trigonometry/images/sohcohtoa/sohcahtoa-all.png

OpenStudy (jdoe0001):

hmmm well, I see, you're using the 30-60-90 rule

OpenStudy (jdoe0001):

well, hmm, still the 30-60-90 rule wouldn't end up using the sine function anyhow I mean you're given an angle's value, 30 degrees so I gather you're expected to use sine and cosine for that

OpenStudy (jdoe0001):

otherwise, your answer will be in terms of "x" and "y"

OpenStudy (jdoe0001):

hmm maybe not ...

OpenStudy (jdoe0001):

in a 30-60-90 rule the smallest side, will half the longest that is "x" the smallest, is half 40 the longest and the OTHER side, is \(\bf \sqrt{3} \times \text{smallest side}\)

OpenStudy (jdoe0001):

|dw:1375644053298:dw|

OpenStudy (jdoe0001):

45-45-90 assumes you have 2 angles of 45 degrees you have there one of 30, and is a right triangle, so you have another of 90 and lastly one of 60

OpenStudy (jdoe0001):

but yes, for the 45-45-90 rule, 2 sides are equal and the longest is \(\bf \sqrt{2}\) of either side

OpenStudy (jdoe0001):

well, for that you'd need to use the \(\bf \sqrt{3}\) ratio for the longer side

OpenStudy (jdoe0001):

|dw:1375644727216:dw|

OpenStudy (jdoe0001):

those are the ratio relationships on a triangle with 30-60-90 angles if I were to stand up yours, it'd look like |dw:1375645193671:dw|

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