Mathematics
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OpenStudy (jackfrost33):
help!!!
how do you find a cosine ratio?
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OpenStudy (anonymous):
you got an example?
OpenStudy (anonymous):
|dw:1444181898957:dw|
here is my example \[\cos(x)=\frac{4}{5}\]
OpenStudy (anonymous):
but that not be what you mean
a specific question would help
OpenStudy (jackfrost33):
i just need to know how to find the angle.
OpenStudy (anonymous):
the angle or the cosine of the angle?
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OpenStudy (jackfrost33):
the cosine of an angle
OpenStudy (anonymous):
do you have the sides of a right triangle?
OpenStudy (jackfrost33):
yeah hypotenuse is 2 long leg is sr of 3 and short leg is 1
OpenStudy (jackfrost33):
sr is square root
OpenStudy (anonymous):
oh ok
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OpenStudy (anonymous):
it is the length of the "adjacent' side over the length of the hypotenuse
OpenStudy (anonymous):
so it kind of depends on which angle and how it is oriented
OpenStudy (anonymous):
do you know what i mean by "adjacent" ?
OpenStudy (jackfrost33):
yes
OpenStudy (anonymous):
|dw:1444182288625:dw|
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OpenStudy (anonymous):
so in the above picture \[\cos(x)=\frac{a}{h}\]
OpenStudy (anonymous):
|dw:1444182390167:dw|
OpenStudy (anonymous):
if it looks like that, then \[\cos(x0=\frac{\sqrt3}{2}\] but it may not look like that
OpenStudy (anonymous):
|dw:1444182488404:dw|
for this one \[\cos(x)=\frac{1}{2}\]
OpenStudy (jackfrost33):
the problem i was given looked like this..|dw:1444182458243:dw|