c/sinC=b/sinB
sinC=sin90°=1
0.8328/1=0.2954/sinB
sinB=0.3547
∠B=20°
∠A=180°-∠B-∠C=70°
a²=b²+c²-2bccosA
a²=0.2954²+0.8328²-2×0.2954×0.8328×cos70°
a≈0.7826
在Rt△ABC中,c=0.8328,b=0.2954,∠C=90°,根据下列条件解直角三角形
c/sinC=b/sinB
sinC=sin90°=1
0.8328/1=0.2954/sinB
sinB=0.3547
∠B=20°
∠A=180°-∠B-∠C=70°
a²=b²+c²-2bccosA
a²=0.2954²+0.8328²-2×0.2954×0.8328×cos70°
a≈0.7826