Mathematics
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OpenStudy (anonymous):
I'm quite confused.
A right triangle has legs e and f and hypot. h. e = 10. The angle opposite leg f is 35*. What is the length of the hypotenuse?
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OpenStudy (anonymous):
I know I need to use the pythagorean theorem when I get the side length, and I know how to get the side length. but do I use sine, cosine, or tangent?
OpenStudy (anonymous):
Tangent
OpenStudy (anonymous):
Can you explain, please?
OpenStudy (anonymous):
I'm confused when finding which one to use.
OpenStudy (anonymous):
Tangent is the only one that involves finding the hypotenuse, using both legs .
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OpenStudy (anonymous):
Ah, ok. Can you wait around so you cam confirm if my answer is right?
OpenStudy (anonymous):
Yep
OpenStudy (anonymous):
What did you get ?
OpenStudy (anonymous):
Working it out right now.
OpenStudy (anonymous):
You can go somewhere else if you'd like, i can tag you.
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OpenStudy (anonymous):
Tan35 = o/h
OpenStudy (anonymous):
Its fine .
OpenStudy (anonymous):
|dw:1427154085365:dw|
OpenStudy (anonymous):
Tan35 = o/a not o/h.
Tan35 = f/10
OpenStudy (anonymous):
Wait the angle is 35 degrees ?
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OpenStudy (anonymous):
Yes.
OpenStudy (anonymous):
What is e then ?
OpenStudy (anonymous):
e = 10
OpenStudy (anonymous):
Tan35 * 10
OpenStudy (anonymous):
So e and f is 10 ?
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OpenStudy (anonymous):
Sorry.
OpenStudy (anonymous):
F = unknown
E = 10
H= unknown
Angle = 35
OpenStudy (anonymous):
Oh i got it okay
OpenStudy (anonymous):
0.7002 * 10 = 7.002
OpenStudy (anonymous):
F = 7
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OpenStudy (anonymous):
10^2 + 7^2 = c^2
OpenStudy (anonymous):
170 = c^2
OpenStudy (anonymous):
sqrt170
OpenStudy (anonymous):
Which cannot be reduced. Or equals 13.04
OpenStudy (anonymous):
So then H = 13.03
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OpenStudy (anonymous):
Not 13.04
OpenStudy (anonymous):
How does it look?