தீர்க்க \(\frac{{\sin 40^\circ }}{{\cos 50^\circ }} + \frac{{cosec50^\circ }}{{sec40^\circ }} - 4cos50^\circ \;cosec40^\circ \)
1
2
2
-1
3
1
4
-2
தீர்க்க \(\frac{{\sin 40^\circ }}{{\cos 50^\circ }} + \frac{{cosec50^\circ }}{{sec40^\circ }} - 4cos50^\circ \;cosec40^\circ \)