Question

解三角形 B=4 c=4.8 角c=75度

Answer 1

=2√3 cos150=-√3/2=1-2(sin75)^2 sin75=√[(1 √3/2)/2]=√[(2 √3)/4]=[√(8 4√3)]/4=(√6 √2)/4 所以a/sinA=c/