Please help with Trig. for ∆ABC: SSS, SAS, SSA, or AAS?

Question

Please help me with number 13 & 14. I really apreciate the help for this two problems in advance. Also the link below is to the actual problems. Thanks

http://www.fbixtreme.com/1314.jpg

Indicate what situation applies to the given information for ∆ABC: SSS, SAS, SSA, or AAS. Then, state the method(s) you could use to find the indicated part.

13). β=45°, a=12, c=9; find b.

14). α=40°, β=28°, b=6; find a.

Answer 1

13. SAS, use the cosine rule: b2 = a2 + c2 - 2 x a x c x cosB

14. AAS, use the sin rule: sinA/a = sinB/b = sinC/c

Capital letters indicate Greek letters and a "2" behind a letter indicates a "squared" in ths anser. Hope it's all good!!!

Answer 2

seek for some issues first: If it has an perspective length or image (ex: the main outstanding perspective image is almost a nook) If it has any element to perceive a line length (ex: a congruent image) Then count quantity the style of angles and facets that are categorized. If it has 3 area length measurements, then it is SSS. If it has 2 area length measurements and one perspective length, then it is SAS. If it has 2 perspective length measurements and one area length length, then it is AAS (or ASA, they're the comparable element). If it has 3 perspective measurements, then it is AAA. in case you're perplexed approximately any of the symbols, ask your instructor or look on your math e book. i'm hoping this became right into a help.

Answer 3

Trig Sas

Answer 4

for 13, the law of cosines should help.
http://mathworld.wolfram.com/LawofCosines.html

for 14, draw a sketch and see what would work. The law of sines is used when you know angles and their opposing sides.
sin alpha/a = sin beta/b , right?
http://mathworld.wolfram.com/LawofSines.html