初二物理下冊(cè)視頻

證明:

三角形中，根據(jù)正弦定理:

a/sinA=b/sinB=c/sinC

設(shè)a與b不等，

a/b=sinA/sinB不等于1

sinA，sinB不相等

角A，B不等。

得證。

。。你買(mǎi)書(shū)就有送的啊

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淘寶上有賣(mài)的

I watched “Gone with the Wind” during my winter school ***.It’s an old classic movie and I like it very much.I especially Scarlett O’Hara,a strong willed Southern girl,who,when facing the total destruction of her family’s plantation by the Yankee troops and the cold feel from her husband Rhett Butler,showed her strong will that she will survive,and will not go hungry for another day.Because “after all,tomorrow is another day!”

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