The value of `1/0.2-2/0.8`

The value of tan6^0tan42^0tan66^0tan78^0 is (a)1 (b) 1/2 (c) 1/4 (d) 1/8

The value of 0. 2^(logsqrt(5)1/4+1/8+1/(16)+) is 4 b. log4 c. log2 d. none of these

The value of cos (2Cos^-1 0.8) is

Find the value of (2^0+8^0)/6^0

For the following probability distribution: X :\ \ -4\ \ -3\ -2\ \ -1\ \ 0 P(X):\ \ 0. 1\ 0. 2\ \ 0. 3\ \ 0. 2\ \ 0. 2 The value of E(X) is a . 0 b. -1 c. -2 d. -1. 8

Column I Column II The value of ((4+sec20^0)/(cosec20^0))^2 , is p. 1 The minimum value of (1+cos2x+8sin^2x)/(2sin2x),x(0,pi/2) is q. 2 The value of (8sin40^0dotsin50^0dottan10^0)/(cos80^0) r. 3 If (cos5A)/(cosA)+(sin5A)/(sinA)=a+bcos4A , then (a^2)/b is s. 4

The value of int_0^(2pi)sqrt(1+sin (x/2)dx is a. 0 b. 4 c. 2 d. 8

If the line x-1=0 is the directrix of the parabola y^2-k x+8=0 , then one of the values of k is (a) 1/8 (b) 8 (c) 4 (d) 1/4

If the line x-1=0 is the directrix of the parabola y^2-k x+8=0 , then one of the values of k is 1/8 (b) 8 (c) 4 (d) 1/4

The value of int_(0)^(1)(8log(1+x))/(1+x^(2))dx is