Find general solutions or solution as per given condition: `costheta=0`,`0lethetale2pi`

Find general solutions or solution as per given condition: sintheta=0 , 0lethetale2pi

Find general solutions or solution as per given condition: 4costheta+3sintheta=5

Find general solutions or solution as per given condition: tanx- cotx= 2

Find general solutions or solution as per given condition: tan5theta=cot2theta

Find general solutions or solution as per given condition: 2cos^2theta + 3costheta-2= 0

Find general solutions or solution as per given condition: costheta+cos5theta-2cos3theta=0

Find general solutions or solution as per given condition: cos2theta+sin2theta=costheta+sintheta

Find general solutions or solution as per given condition: 3costheta+4sintheta=4 ,given that cos53^@8'=0.6

Find general solutions or solution as per given condition: costheta+sqrt3sintheta=sqrt2

Find general solutions or solution as per given condition: sqrt2cosx+1=0 , 0lexlepi