Trygonometria
/Uzasadnij tożsamość
1)
L=sin^2a+1+2cosa+cos^2a/sina(1+cosa)=2(1+cosa)/sina(1+cosa)=2/sina
2)
L=sin^2a/cos^2a -sin^2a)cos^2a/sin^2a=(sin^2a-sin^2cos^2/cos^2a)*cos^2a/sin^2a=1-cos^2a=sin^2a
3)
L=1+cosa/sina=sina+cosa/sina
4)
L=cos^2a/sin^2a+1=1/sin^2a
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1)
L=sin^2a+1+2cosa+cos^2a/sina(1+cosa)=2(1+cosa)/sina(1+cosa)=2/sina
2)
L=sin^2a/cos^2a -sin^2a)cos^2a/sin^2a=(sin^2a-sin^2cos^2/cos^2a)*cos^2a/sin^2a=1-cos^2a=sin^2a
3)
L=1+cosa/sina=sina+cosa/sina
4)
L=cos^2a/sin^2a+1=1/sin^2a