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Mathematics 22 Online
OpenStudy (highschoolmom2010):

find the measure of "a"

OpenStudy (♪chibiterasu):

What is A?

OpenStudy (highschoolmom2010):

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OpenStudy (♪chibiterasu):

It says 32.2 sooo . . . 32.2?

OpenStudy (♪chibiterasu):

We need specific measurements to solve for A.

OpenStudy (highschoolmom2010):

the lower case a

OpenStudy (♪chibiterasu):

aah

OpenStudy (♪chibiterasu):

Sorry, I don't know this :I

OpenStudy (jdoe0001):

looks to me is GIVEN, 32.2 =)

OpenStudy (shamil98):

a as in the side i think she means

OpenStudy (highschoolmom2010):

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OpenStudy (jdoe0001):

hehhe, I saw A no a =)

OpenStudy (shamil98):

I think it is 8 , because it looks like an iscoceles triangle, but i could be wrong, to find it first

OpenStudy (shamil98):

I'll draw on the pic thingy one sec.

OpenStudy (♪chibiterasu):

It may be scalene but that is not specified

OpenStudy (highschoolmom2010):

8 is worng

OpenStudy (shamil98):

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OpenStudy (shamil98):

have of ab = 5.5

OpenStudy (jdoe0001):

well, you have the angle, and you also have the 2 sides making it, so is all you need to use the Law of Cosines \(\bf a^2 = b^2+c^2-(2bc)cos(A)\implies a = \sqrt{b^2+c^2-(2bc)cos(A)}\)

OpenStudy (shamil98):

or u cud do that .

OpenStudy (highschoolmom2010):

im confused how to do that

OpenStudy (♪chibiterasu):

Well then we know that it's scalene

OpenStudy (jdoe0001):

hmmm have you covered the Law of Cosines yet?

OpenStudy (shamil98):

find the other leg*

OpenStudy (highschoolmom2010):

yes but its not clear

OpenStudy (shamil98):

just plug in the values.

OpenStudy (jdoe0001):

well, in this case, your triangle resembles the sides "a" "b" and "c". so just plug them in

OpenStudy (shamil98):

a = √8^2 + 11^2 - 2(88) cos (32.2) , i think its that, my trig is rusty >.>

OpenStudy (highschoolmom2010):

can explain ^^

OpenStudy (shamil98):

a = √185 - 176 cos (32.2) ?..

OpenStudy (jdoe0001):

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