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Mathematics 17 Online
OpenStudy (samanddean1967):

find the value of x round to the nearest tenth pic below

OpenStudy (samanddean1967):

jimthompson5910 (jim_thompson5910):

Which number? #14 ?

OpenStudy (samanddean1967):

yes I believe this has something to do with sin cos and those but I don't know the rules for those

jimthompson5910 (jim_thompson5910):

|dw:1462763994877:dw|

jimthompson5910 (jim_thompson5910):

the reference angle is 35° let's add on the labels based on this reference angle |dw:1462764084787:dw|

jimthompson5910 (jim_thompson5910):

the opposite side is the leg that is furthest way from the 35° angle the adjacent side is the closest leg to the 35° angle the hypotenuse is ALWAYS the longest side the hypotenuse is ALWAYS the side opposite the 90 degree angle longest side is opposite largest angle

OpenStudy (samanddean1967):

ok I understand all that and I want to thank you again for helping so much

jimthompson5910 (jim_thompson5910):

so we are given the hypotenuse (20) and we want to find the opposite side (x) what trig function ties together the opposite side and the hypotenuse?

OpenStudy (samanddean1967):

I understand the first point but I dont understand the question you asked

jimthompson5910 (jim_thompson5910):

are you familiar with the idea that sin(angle) = opposite/hypotenuse ??

jimthompson5910 (jim_thompson5910):

http://www.mathwords.com/s/s_assets/s126.gif SOH CAH TOA is one way to remember the ratios

OpenStudy (samanddean1967):

ohhh yes but I just can't remember the different between tan, sin, and cos

jimthompson5910 (jim_thompson5910):

http://cdn-3.ask-math.com/images/SOHCAHTOA.png

jimthompson5910 (jim_thompson5910):

one way to pronounce `SOH CAH TOA` is to say it like `soak-a-toe-ah`

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