If `16cotx=12`, then `(sinx-cosx)/(sinx+cosx)` equals (a) `1/7` (b) `3/7` (c) `2/7` (d) `0`

If 2cosx+sinx=1 , then find 7cosx+6sinx

Solve : 4sinx.cosx+2sinx+2cosx+1=0

If sin2x=1 , then |(0,cosx,-sinx),(sinx,0,cosx),(cosx,sinx,0)| equals :

If y=tan^(-1)((sinx+cosx)/(cosx-sinx)) , then (dy)/(dx) is equal to (a) 1/2 (b) 0 (c) 1 (d) none of these

IF 5sinx+12cosx=7 then find 5cosx-12sinx=……..

Solve : 4sinx cosx +2sinx+2cosx+1=0

int_0^(pi/2) (cosx-sinx)/(1+sinx cosx) dx =