Mathematics
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OpenStudy (anonymous):
Using the following triangle, what is the secant of angle B?
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OpenStudy (anonymous):
answer choices are
Sec B= c/b
Sec B= a/c
Sec B= b/c
Sec B= c/a
OpenStudy (anonymous):
someone please help
OpenStudy (abdullahm):
Hint: \(\sf\Large sec(B)= \frac{1}{cos(B)}\)
OpenStudy (anonymous):
i really don't know how to do this...
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OpenStudy (abdullahm):
|dw:1434820417301:dw|
OpenStudy (anonymous):
i think i kind of see what you're showing me...
OpenStudy (abdullahm):
Find \(\sf cos(B)\)
and then do the reciprocal of that to find out what
\(\sf sec(B) \) is. :)
OpenStudy (anonymous):
so it's Sec B b/c?
OpenStudy (abdullahm):
No...
What is \(\sf cos(B)\) first?
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OpenStudy (anonymous):
cos(B) is adj/hyp
OpenStudy (acxbox22):
SEC(B)=hypotenuse/adjacent which is the same as the reciprocal of COS(B)
OpenStudy (abdullahm):
^ exactly.
OpenStudy (abdullahm):
So what side is adjacent to angle B?
OpenStudy (anonymous):
the opposite?
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OpenStudy (abdullahm):
|dw:1434821019903:dw|
OpenStudy (abdullahm):
The adjacent side.
OpenStudy (anonymous):
oh. sorry ....
OpenStudy (anonymous):
so what's the annswer?
OpenStudy (abdullahm):
|dw:1434821272236:dw|
What is the adjacent side to angle B?
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OpenStudy (anonymous):
b
OpenStudy (anonymous):
the one between A and C
OpenStudy (abdullahm):
That is the side opposite to it, not adjacent.
OpenStudy (anonymous):
a?
OpenStudy (abdullahm):
correct, and what is the hypotenuse?
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OpenStudy (abdullahm):
Sec(B)=hypotenuse/adjacent
so adj=a
\(\sf\Large Sec(B)=\frac{Hypotenuse}{a}\)
Which answer choice has a in the denominator?
OpenStudy (anonymous):
the denominator?
OpenStudy (abdullahm):
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