Answers

2016-07-25T13:28:35+08:00
Included angle of the given sides=180-@; formula; A=1/2bhsin@; b=12; a=9; h/a=sin@; h=9sin@; 48=1/2(12)9sin@; @=62.7deg; therefore: =180-62.7 =117.3deg...ans
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