Solve `costheta=sintheta`

If costheta-sintheta=sqrt(2)costheta , then find the value of costheta+sintheta .

costheta[[costheta, sintheta], [-sintheta, costheta]]+sintheta[[sintheta, -costheta], [costheta, sintheta]]=

If costheta+sintheta=sqrt(2)costheta ,then find the value of (costheta-sintheta)/(sintheta) .

If costheta+sintheta=sqrt(2)costheta , then costheta-sintheta is

Evaluate- |[costheta,sintheta],[sintheta,costheta]|

Show that costheta [[costheta, sintheta],[-sintheta, cos theta]] + sin theta [[sintheta ,-cos theta],[costheta, sin theta]] =1

If sintheta+costheta=sqrt2costhetathen costheta-sintheta is equal to

If 4cottheta =3 , then, [frac(sintheta -costheta)(sintheta + costheta)] is equal to

If tantheta=(a)/(b) ,then find the value of (costheta+sintheta)/(costheta-sintheta) .