Contact us
Choose a category below so we can get back to you as quickly as possible.
∵在△ABC中,A=45°,C=30°,c=10cm,∴B=180°-(A+C)=105°由正弦定理asinA=csinC,得a=c•sinAsinC=10•sin45°sin30°=102cm.同理可得b=c•sinBsinC=10•sin105°sin30°=5(6+2)cm.綜上所述,a=102cm,b=5(6+2)cm,B=105°.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.