`tan4 0^@+2tan1 0^@` is equal to

tan100^(@)+tan125^(@)+tan100^(@)tan125^(@)is equal to 0(b)(1)/(2)(c)-1(d)1

value of tan6^0tan42^0tan66^0tan78^0 is equal to - a) 1 b) 2 c) 1/4 d) 1/8

tan100^0+tan125^0+tan100^0tan125^0 is equal to 0 (b) 1/2 (c) -1 (d) 1

tan100^0+tan125^0+tan100^0tan125^0 is equal to 0 (b) 1/2 (c) -1 (d) 1

tan100^0+tan125^0+tan100^0tan125^0 is equal to

tan100^0+tan125^0+tan100^0tan125^0 is equal to

int_(0)^(pi//4) (sec^(2)x)/((1+tan x)(2+tan x))dx is equal to

Let a in(0,(pi)/(2)) ,then the value of lim_(a rarr0)(1)/(a^(3))int_(0)^(a)ln(1+tan a tan x)dx is equal to