Sines and Cosines: Isolating Variables

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bookworm396

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Jan 22, 2008
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Solve triangle HJK. Round measures to the nearest tenth.

r=9.1, g=8.3, measure angle D=32

I understand both the law of sines and of cosines, but what I don't understand is how to isolate the variable so that I can solve the triangle. I'm pretty sure the teacher explained this, but I can't remember exactly what she did.
 
You need to be clearer on the statement of the problem. You say...

Solve triangle HJK. Round measures to the nearest tenth.

r=9.1, g=8.3, measure angle D=32

What and where are r, g and D in triangle HJK?
 
bookworm396 said:
Solve triangle HJK. Round measures to the nearest tenth.

r=9.1, g=8.3, measure angle D=32

I understand both the law of sines and of cosines, but what I don't understand is how to isolate the variable so that I can solve the triangle. I'm pretty sure the teacher explained this, but I can't remember exactly what she did.
Click to expand...

Your question is not complete. Go back and type the entire question correctly.

Where are r, g and D located in your given triangle?
 
Oops. :roll: I copied the wrong directions--it's triangel RGD, and side r is across from angle R, side g is across from angle G, and side d is across from angle D. Hope that clears that up.
 
Find the length of side d:
\(\displaystyle d^2 = \left( {9.1} \right)^2 + \left( {8.3} \right)^2 - 2 \left( {9.1} \right)\left( {8.3} \right)\cos \left( {32^ \circ } \right)\)
 
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