Solution to inequality `cos2x+5cosx+3>=0` over `[-pi,pi]` is

In [-pi, pi] , solution of inequality………. cos 2x+5cos x +3 ge 0 is

In [-pi, pi] , solution of inequality………. cos 2x+5cos x +3 ge 0 is

The solution set of inequation cos x+(1)/(2)>=0 is [-pi,pi] is

Solution set of inequality sin^(2)x cos x>cos^(2)x sin x where x in(0,pi) is

The solution set of the inequality 4(cos^(-1)x)^(2)-1>=0 is [-1,(cos1)/(2)] (b) [0,(pi)/(3)]((cos1)/(2),1] (d) [(pi)/(3),(2 pi)/(3)]

Principal solutions of the equation sin2x+cos2x=0, where pi

The number of solutions of the equation x^(3)+2x^(2)+5x+2cosx=0 in [0,2pi] is

The solution set of the inequality 4(cos^(-1)x)^(2)-1>=0 is a.[-1,(cos1)/(2)]b0,(pi)/(3)c*[(cos1)/(2),1] d.[(pi)/(3),(2 pi)/(3)]