If x=sin(90∘−a)cot(90∘−a), then x is equal to .................
cot(90∘−a)=cos(90∘−a)sin(90∘−a) Hence, sin(90∘−a)cot(90∘−a)=sin(90∘−a)×cos(90∘−a)sin(90∘−a) =cos(90∘−a) =sin a
If x = sin (90∘- a) cot (90∘- a), then x is equal to ............................