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sinothat p21,D Seco + Tano =P then, prove thatP24 |
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Answer» secx + tanx=p; 1+ sinx/ cosx=p; 1+cosx= pcosx; squaring both sides; 1+Sinx^2+2sinx=p^2 cosx^2; 1+sinx^2+2sinx=p^2(1-sinx^2); 1+ sinx^2+2 sinx=p^2-p^2sinx^2; sinx=-2+-V4+4(1-p^2)(1+p^2)/2(1-p^2)=-2+-2p^2/2(1+p^2)=-1+p^2/1+p= p^2-1/p^2+1 |
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