IB MAI HL Geometry & Trigonometry Topic 3.2 Trigonometry (id: f522915c7)

本题目来源于试卷: IB MAI HL Geometry & Trigonometry Topic 3.2 Trigonometry，类别为 IB数学

[填空题]
In a triangle ABC,AB=12 c;y2qyd q.q(xq7vy h)jvosv c6w*wtua8l; 9t-m lfyc/ s/5 dor(syk9 q f31gjx(and AC=15 cm. The area of the triangle is $80cm^2$.
1.Find the two possible values for angle BÂC.  $^{\circ}$,  $^{\circ}$
2.Given that BÂC is obtuse, find the length of side BC.  cm

参考答案:
空格1: 62.7±3%  空格2: 117±3%  空格3: 23.1±3% 


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