Question 649666: Part of my homework is to find a missing length(s) of triangles. They give us the formula for ONE missing side (ex. 2/3 = a/6), but the actual problems have two or more missing lengths. I'm not sure how to alter the formula I've been given. What is the formula for two missing lengths, or three missing lengths? I hope this isn't too general! Thank you SOOooo much! ;)!
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Part of my homework is to find a missing length(s) of triangles. They give us the formula for ONE missing side (ex. 2/3 = a/6), but the actual problems have two or more missing lengths. I'm not sure how to alter the formula I've been given. What is the formula for two missing lengths, or three missing lengths?
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To solve a triangle, you have to know 3 elements, and at least one known element has to be a side.
If you know 3 angles, there are an infinite # of similar triangles. That won't work.
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(ex. 2/3 = a/6)
2/3 = a/6
Cross multiply
2*6 = 3*a
a = 4
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What is the formula for two missing lengths,
If you have 1 side and 3 angles, use the Law of Sines.
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or three missing lengths?
Can't be solved, as stated above.
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