[" If "2tan^(2)pi-5sec x-1=0" has "7" different roots in "],[log_(0)(n pi)/(2)],n in N," then find the greatest value "],[" of "]

If 2tan^(2)x-5sec x=1 for exactly seven distinct value of x in[0,(n pi)/(2)],n in N then find the greatest value of n.

If tan^(2)theta-sec theta-5=0 for exactly 9 values of theta in[0,(n pi)/(2)];n in N, then the greatest value of n is

If tan^(2)x-5sec x=1 is satisfied by exactly seven distinct values of x in[0,((2n+1)pi)/(2)],n in N, then the greatest value of n is

If 2tan^2x-5secx=1 is satisfied by exactly seven distinct values of x in [0,((2n+1)pi)/2],n in N , then the greatest value of n is________.

If 2tan^2x-5secx=1 is satisfied by exactly seven distinct values of x in [0,((2n+1)pi)/2],n in N , then the greatest value of n is________.

If 2tan^2x-5secx=1 is satisfied by exactly seven distinct values of x in [0,((2n+1)pi)/2],n in N , then the greatest value of n is________.

If 2tan^(2)x-5secx=1 for exactly 7 distinct values of x in [0,(npi)/2], n in N then greatest value of n is

"If " 2"tan"^(2) theta - 5 "sec" theta = 1 has exactly 7 solution in the interval [0, n pi//2], n in N , then the least and greatest values of n are

If sin^(2) x - 2 sin x - 1 = 0 has exactly four different solutions in x in [0, n pi] , then value/ values of n is / are (n in Z)