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highschoolmom2010
Group Title
using Sin, Cos, Tan For parts (a)–(c), find the value of w to the nearest tenth
 11 months ago
 11 months ago
highschoolmom2010 Group Title
using Sin, Cos, Tan For parts (a)–(c), find the value of w to the nearest tenth
 11 months ago
 11 months ago

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highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
 11 months ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
familiar wid SOHCAHTOA ?
 11 months ago

phi Group TitleBest ResponseYou've already chosen the best response.1
you are zipping along... now learning trig ?
 11 months ago

phi Group TitleBest ResponseYou've already chosen the best response.1
when you get time (if you want to see more info) http://www.khanacademy.org/math/trigonometry/basictrigonometry/basic_trig_ratios/v/basictrigonometry
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
not really understand but @phi that is in my lessons for geometry
 11 months ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
yeah usually they put trig ratios right after similar triangles
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
i can kinda do it not really well yet
 11 months ago

phi Group TitleBest ResponseYou've already chosen the best response.1
khan explains it better than trying to learn it from reading explanations here. This site is better for going over your problems
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
ok ok so watch his videos first :D
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
dw:1375894551709:dw doesnt really show how to do this @ganeshie8
 11 months ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
first go to the 54 degree corner and stare at the triangle from there
 11 months ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
dw:1375895636780:dw
 11 months ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
dw:1375895683012:dw
 11 months ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
thats opposite side eh ?
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
yes thats the opposite
 11 months ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
wat about 17, wat is it
 11 months ago

phi Group TitleBest ResponseYou've already chosen the best response.1
Here is khan working this type of problem http://www.khanacademy.org/math/trigonometry/basictrigonometry/basic_trig_ratios/v/exampletrigtosolvethesidesandanglesofarighttriangle
 11 months ago

phi Group TitleBest ResponseYou've already chosen the best response.1
the hypotenuse is opposite the 90º angle. 17 in (a) is the hypotenuse
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
idk what i was thinking it is hyp,
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
this is really confusing
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
@phi i think i got it dw:1375975866022:dw \[\sin 54=\frac{ w }{ 17 }\] \[17*\sin 54=\frac{ w }{ 17 }*17\] \[17\sin54=W\] \[W \approx13.8\]
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
ok now can yall check my b and c part when i get the posted
 11 months ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
yea sure. remember this  hypotenuse is the longest side. it wont change no matter which corner u go
 11 months ago

phi Group TitleBest ResponseYou've already chosen the best response.1
once you get the idea and stay focused (don't make a dumb mistake) and you know how to work a calculator this stuff is not hard.
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
dw:1375976336846:dw this one i get mixed up \[\tan \frac{ 1.0 }{ W }\] \[W* \tan 28=\frac{ 1.0 }{ W }*W\] \[W \tan 28=1.0\] im unsure of how to do that
 11 months ago

phi Group TitleBest ResponseYou've already chosen the best response.1
remember that tan(28) is some (ugly) number which a calculator will know. divide both sides by tan(28)
 11 months ago

phi Group TitleBest ResponseYou've already chosen the best response.1
you get w= 1/tan(28)
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
but when i plug in 1/tan(28) the calculator gave me this 3.55328644813
 11 months ago

phi Group TitleBest ResponseYou've already chosen the best response.1
your calculator is in "radian mode" you want to be in degree mode
 11 months ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
change the mode to degrees
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
ohh ok
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
1.88
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
so approx 1.9
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
horray ok and for the last pne
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
dw:1375977256082:dw \[\cos(33)=\frac{ w }{ 4.5 }\] \[4.5*\cos(33)=\frac{ w }{ 4.5 }*4.5\] \[4.5\cos(33)=W\] \[W \approx3.8\]
 11 months ago

highschoolmom2010 Group TitleBest ResponseYou've already chosen the best response.1
ty @phi & @ganeshie8 for the help
 11 months ago
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