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OpenStudy (anonymous):
.
OpenStudy (anonymous):
a^2+b^2=c^2
OpenStudy (anonymous):
ok what do the inside angles of a triangle add up to?
OpenStudy (anonymous):
180 degrees.
Directrix (directrix):
You need the 30-60-90 theorem. See attached information.
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OpenStudy (anonymous):
is shows us already that there is a 90 and a 30 which means we need another 60 to get 180. so the top angle is 60, this is a 30 60 90 triangle which means there are no congruent sides
OpenStudy (anonymous):
^^^
OpenStudy (anonymous):
You could also use trig functions. \[\cos (30)=\frac{ 5\sqrt{3} }{ z }\] And just solve algebraically.
Directrix (directrix):
The 30-leg is the 60-leg divided by square root of 3.
OpenStudy (anonymous):
Use the cos rule. Cos(Theta)=Adjacent/Hypotenuse
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OpenStudy (anonymous):
Basically 5root3 Divided by cos 30.
OpenStudy (anonymous):
My openstudy is getting buggy. If I don't reply for a while it's because it logged me out or something.
Directrix (directrix):
And, according to the theorem, the hypotenuse has length twice the 30-leg.
We do not need right triangle trig here. See attached. @asher1027
Directrix (directrix):
>>>My openstudy is getting buggy.
It is not just your OS that is getting buggy.
OpenStudy (agent0smith):
OS has been like this for weeks. It has worked properly much less often than it has worked poorly.
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OpenStudy (anonymous):
OS as in operating system?
Directrix (directrix):
@asher1027 Did you read the 30-60-90 theorem I attached? You need to know that.
OpenStudy (agent0smith):
OS is openstudy.
OpenStudy (anonymous):
Yeah I read it. Thanks.
OpenStudy (anonymous):
Oh yeah, duh. haha
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Directrix (directrix):
So, what did you get for the hypotenuse length?
OpenStudy (anonymous):
@agent0smith
OpenStudy (anonymous):
Is it 25?
Directrix (directrix):
No.
Directrix (directrix):
Look at this diagram.
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Directrix (directrix):
^^^ It is an application of the 30-60-90 theorem.
OpenStudy (anonymous):
Ok, oops. I misread some of the previous instructions. That makes sense.
Directrix (directrix):
So, what is the length of the hypotenuse?
OpenStudy (anonymous):
10.
Directrix (directrix):
Yes, that is what I got.
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