Mathematics
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OpenStudy (anonymous):
What value of x satisfies cot(90°−x)= –√3/3?
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OpenStudy (solomonzelman):
cot of what equals -3√3 ?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
Yes that was great answer~
OpenStudy (anonymous):
Please Help mine~~~
OpenStudy (solomonzelman):
cot v = - √3/3 --> tan v = -3 / √3 = -√3
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OpenStudy (anonymous):
the question ask for it degrees??
OpenStudy (solomonzelman):
I mean tan^(-1) -√3
rishavraj (rishavraj):
apply cot(90-x) = tan x
OpenStudy (solomonzelman):
Basically,
cot(90-x)= -√3 / 3
tan(90-x) = -√3
tan^(-1) -√3 = -60º
(90-x)º = 60º
rishavraj (rishavraj):
and then rationalise or directly divide the RHS
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OpenStudy (solomonzelman):
x=30
OpenStudy (anonymous):
these are the answer choices
120°
240°
210°
150°
OpenStudy (anonymous):
did i typed the question wrong?
rishavraj (rishavraj):
no i dont think so?.... bt why did u ask tht
OpenStudy (anonymous):
just making sure because the answer solomonzelman gave me is not a answer choice
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rishavraj (rishavraj):
the answer would be 120...
Parth (parthkohli):
\[\cot (90 - x) = \tan(x)\]
OpenStudy (gudden):
The question you posted is not wrong David.. It's just that the values reoccur... :)
OpenStudy (anonymous):
thanks you guys
OpenStudy (anonymous):
thanks