Solve : root 2 * cosec 20 degree *sec 20 degree = ? Share with your friends Share 2 Rahul Raj answered this Dear student 2×cosec20×sec20=2sin20cos20=22sin40sin120=sin(90+30)=cos30=32sin120=sin(3*40)=3sin40-4sin340=32solving we can get sin40=0.642×cosec20×sec20=2sin20cos20=22sin40=2×1.410.64=4.4 Regards -8 View Full Answer Ashraf Uddin Ahmed answered this 4.38 i think....not sure... 0 Jaideep C answered this cosec 20 . sec2 20 . 0
