Yesterday my friend turned to me to discuss something about her homework.When I got this I got stuck at the very beginning.
1 - cos(x) - cos(y) + sin(x)cos(y) = 0
1 + cos(x) - sin(y) + sin(x)sin(y) = 0
How can I get sinx?(We are learning about the relations between sinx,cosx and tanx recently,Such as tanx=sinx/cosx,(sinx^2)+(cosx)^2=1)
Thanks for your help.
1 - cos(x) - cos(y) + sin(x)cos(y) = 0
1 + cos(x) - sin(y) + sin(x)sin(y) = 0
How can I get sinx?(We are learning about the relations between sinx,cosx and tanx recently,Such as tanx=sinx/cosx,(sinx^2)+(cosx)^2=1)
Thanks for your help.
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