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Mathematics 19 Online
OpenStudy (anonymous):

Using the following triangle, what is the secant of angle B?

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...

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?

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?

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?

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?

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):

|dw:1434821783694:dw|

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