Construct a triangle abc in which bc=7cm,b=75 degree and ab+ac=13cm by using trigonometry
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ab = 13-ac
ac²=ab+bc
ac²=49+169-ac²
ac²+ac²=218
2ac²=218
ac²=218/2
ac²=109
ac=√109
ac²=ab+bc
ac²=49+169-ac²
ac²+ac²=218
2ac²=218
ac²=218/2
ac²=109
ac=√109
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