在三角形ABC中,a=0.15,C=103.4度,B=75.85度.求c的长?

问题描述:

在三角形ABC中,a=0.15,C=103.4度,B=75.85度.求c的长?

求得角A=0.75度,由正弦定理,a/sinA = c/sinC ;求得c=11.15

A=180-103.4-75.85=0.75a/sinA=c/sinCc=asinC/sinA=0.15sin103.4/sin0.75=0.15x0.97277587820939656628059743687412/0.013089595571344440190284209702852=0.14591638173140948494208961553112/0.013089595571344440...