Mathematics
7 Online
OpenStudy (anonymous):
find the exact value of sin^-1 (1/2),-Π/2 ≤ x ≤ Π/2
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OpenStudy (anonymous):
\[x=\sin^{-1}\frac{1}{2}\]
\[\sin x=\frac{1}{2}\]
so x=pi/3 for the given range
OpenStudy (anonymous):
can you give me the answer it's my test ? i have to summit tomaroo
OpenStudy (anonymous):
is that the answer?
OpenStudy (anonymous):
sorry it is: x=pi/6 (30degrees)
OpenStudy (anonymous):
what do i put for answer?
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OpenStudy (anonymous):
pi/6
OpenStudy (anonymous):
thank you very much
can i ask you one more it's similar ?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
sketch the graph of y = 3sec (x - Π/2) for -2Π ≤ x ≤ 2Π
OpenStudy (anonymous):
help me please
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OpenStudy (anonymous):
what is cos(-x) ?
OpenStudy (anonymous):
1/y i think
OpenStudy (anonymous):
cos(-x)=cosx
and so is sec(-x)=secx
and what is cos(pi/2 - x)?
OpenStudy (anonymous):
is it 0.9997468666
am i right
?
OpenStudy (anonymous):
cos(pi/2 - x)=sinx
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OpenStudy (anonymous):
i think you need to clear your basics first
OpenStudy (anonymous):
ow
OpenStudy (anonymous):
i am totaly dumb on math
OpenStudy (anonymous):
i do try hard but it just don't go through my head
OpenStudy (anonymous):
in which class are you?
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OpenStudy (anonymous):
precalculus
i don't know y i has the class even
OpenStudy (anonymous):
i mean in which grade are you?
OpenStudy (anonymous):
11
OpenStudy (anonymous):
then you can make it,there is nothing too hard in maths
OpenStudy (anonymous):
just you have to make visibility in concepts
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OpenStudy (anonymous):
i guess i suck at that
OpenStudy (anonymous):
are you on college?
OpenStudy (anonymous):
can you give me answer of that question
it's the end of quater tomaroo i need to pass this test inorder to pass on class?
please