Q20 of 256 Page 7

Mark the correct alternative in the following:
The number of distinct real roots of lies in the interval is

∆=(csc x+2 sec x )[(csc x-sec x)² ]

Case1: (csc x+2 sec x )=0

(1^st real root)

Case:(csc x-sec x)² =0

Tan x=1 (2^nd real root)

Mark the correct alternative in the following:

If a, b, c are in A.P., then the determinant

Mark the correct alternative in the following:

If A + B + C = π, then the value of is equal to

Mark the correct alternative in the following:

Let , where 0 ≤ θ ≤ 2π. Then,

Mark the correct alternative in the following:

If , then x =

Mark the correct alternative in the following:The number of distinct real roots of lies in the interval is