व्यंजक `E = 3(sin^(4)theta + cos^(4)theta) - 2(sin^(6)theta + cos^(6)theta) + (sin (pi - alpha))/(sin alpha - cos alpha "tan" (alpha)/(2))-cos alpha` का मान है : (i) 0 ; (ii) 1 ; (iii) 2 ; (iv) -1

Options

A. 0
B. 1
C. 2
D. `-1`

Answer

C