1.

,CesecaLove CA-ICorecaCore ct |

Answer»

1/SinA/1/Sin A -1 + 1/ SinA/1/SinA+1=SinA-1/SinA+ SinA+1/SinA=SinA-1/1+SinA=( SinA-1)(SinA+1)/(1+sinA)^2=Sin^2A-sina+sina-1/(cosA)^2=SinA(sin A)/cosA^2=tanA



Discussion

No Comment Found