The value of expression `(2sin^2 91^0-1)(2sin^2 92^0-1)(2sin^2 180^0-1)` is equal to 0 (b) `1` (c) `2^(90)` (d) `2^(90)-90`

The value of expression (2sin^(2)91^(0)-1)(2sin^(2)92^(0)-1)...(2sin^(2)180^(@)-1) is equal to 0(b)1quad (c)2^(90)(d)2^(90)-90

The value of the expression (2sin^(2)91^(0)-1)(2sin^(2)92^(0)-1)..(2sin^(2)180^(0)-1) is equal to

The value of the expression (1-4sin 10^0 sin 70^0)/(2sin 10^0 ) is- a.1/2 b. 1 c.2 d. none of these

(cos^(2)1^(0)-cos^(2)2^(0))/(2sin3^(0)*sin1^(0)) is equal to

The value of sin0^@sin1^@sin2^@sin3^@.....sin90^@

The value of expression (2(sin1^0+sin2^0+sin3^0+...+sin89^0))/(2(cos1^0+cos2^0++cos44^0)+1) (a) sqrt(2) (b) 1/(sqrt(2)) (c) 1/2 (d) 0

The value of expression (2(sin1^0+sin2^0+sin3^0+...+sin89^0))/(2(cos1^0+cos2^0++cos44^0)+1) (a) sqrt(2) (b) 1/(sqrt(2)) (c) 1/2 (d) 0

The value of expression (2(sin1^0+sin2^0+sin3^0+...+sin89^0))/(2(cos1^0+cos2^0++cos44^0)+1) (a) sqrt(2) (b) 1/(sqrt(2)) (c) 1/2 (d) 0

The value of sin 50^(0)-sin 70^0+sin 10^0 is equal to a. 0 b. 1 c. 2 d. 1//2

The value of sin^2 75^0-sin^2 15^0 is a. 1//2 b. sqrt(3)//2 c. 1 d. 0