The number of solutions of `12cos^3x-7cos^2x+4cosx=9` is 0 (b) 2 (c) infinite (d) none of these

The number of solutions of 12 cos^(3) x-7 cos^(2) x+4 cos x=9 is

The number of solutions of 2cosx=|sinx|,0lt=xlt=4pi, is 0 (b) 2 (c) 4 (d) infinite

The number of solutions of sqrt(3x^(2)+x+5)=x-3 is (A) 0 (B) 1 (C) 2 (D) 4

The total number of solution of cosx=sqrt(1-sin2x) in [0,2pi] is equal to 2 (b) 3 (c) 5 (d) none of these

The number of solution of x^(log)x(x+3)^2=16 is a)0 (b) 1 (c) 2 (d) oo

The number of real solutions of the (log)_(0. 5)|x|=2|x| is (a) 1 (b) 2 (c) 0 (d) none of these

The number of solution of sinx+sin2x+sin3x=cosx+cos2x+cos3x ,0lt=xlt=2pi, is (a)7 (b)5 (c) 4 (d) 6

cos 3x + cos x - cos 2x =0

The number of real solutions of the equation (9//10)^x=-3+x-x^2 is a. 2 b. 0 c. 1 d. none of these

The number of solutions of the equation x^2+2x^2+6x+2cosx=0in[0,2pi] is one (b) two (c) three (d) zero