1.

If (sin^3theta-cos^3theta)/(sintheta-costheta)-(costheta)/(sqrt((1+cot^2theta)))-2tanthetacottheta=-1, thetain[0,2pi] then

Answer»

`THETAIN(0,PI//2)-{pi//4}`
`thetain(pi/2,pi)-{3PI//4}`
`thetain(pi,(3pi)/2)-{5pi//4}`
`thetain(0,pi)-{pi//4,pi//2}`

Answer :D


Discussion

No Comment Found