Geometry
10 Online
OpenStudy (anonymous):
If = 27° and x = 9 cm, what is the value of z to the nearest tenth of a centimeter?
A) 19.8
B) 18.8
C) 10.1
D) 17.7
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OpenStudy (bloomlocke367):
where's z?
OpenStudy (anonymous):
On the opposite side of Y
OpenStudy (anonymous):
OpenStudy (bloomlocke367):
and y=27?
OpenStudy (anonymous):
No
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OpenStudy (bloomlocke367):
what =27?
OpenStudy (anonymous):
I think its sin or something like that im not sure the symbol won't show up its like a little circle with a line through it
OpenStudy (bloomlocke367):
|dw:1426639223769:dw|
OpenStudy (anonymous):
Yes and in that angle is looks like this |dw:1426639324802:dw|
OpenStudy (bloomlocke367):
yea cx have you heard of SOHCAHTOA?
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OpenStudy (anonymous):
No
OpenStudy (bloomlocke367):
well it's how most people remember whether to use sine, cosine or tangent.
OpenStudy (anonymous):
so whats the answer?
OpenStudy (bloomlocke367):
I can't just give you the answer, it's against the rules
OpenStudy (anonymous):
I only have 3 more min though
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OpenStudy (bloomlocke367):
anyways, sin=opp/hyp
cos=adj/hyp
and tan=opp/adj
OpenStudy (bloomlocke367):
you have the opposite and are looking for the hypotenuse so you need to use sin..
OpenStudy (anonymous):
I don't have a caculator
OpenStudy (bloomlocke367):
do you have a graphing calculator? I don't have one, but you need one...
OpenStudy (bloomlocke367):
ohhhh
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OpenStudy (bloomlocke367):
well sin(27)=0.4539904997
OpenStudy (bloomlocke367):
so you have 0.4539904997=9/?
OpenStudy (bloomlocke367):
then you have ?*0.4539904997=9
OpenStudy (bloomlocke367):
9/0.4539904997=19.8242...
OpenStudy (bloomlocke367):
there you go...
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OpenStudy (bloomlocke367):
do you understand what I did?