The solution of the equation `cos^2theta+sintheta+1=0` in the interval.
(A) `(-pi/4,pi/4)`
(B) `(pi/4,(3pi)/4)`
(C) `((3pi)/4,(5pi)/4)`
(D) `((5pi)/4,(7pi)/4)`

The solution o the equation cos^(2)theta+s int h eta+1=0 lies in the interval (-pi/4,pi/4) b.(pi/4,3 pi/4)c(3 pi/4,5 pi/4)d.(5 pi/4,7 pi/4)

A solution of the equation cos^(2)theta+s int h eta+1=0 lies in the interval (-pi/4,pi/4) b.(pi/4,3 pi/4)c(3 pi/4,5 pi/4)d*(5 pi/4,7 pi/4)

The number of solutions of the equation "cos"^(7) theta + "sin"^(4) theta = 1 in the interval (-pi, pi) , is

(pi)/(4)-(3 pi)/(4)-(pi)/(6)+(pi)/(4)=

The solution set of the equation 4s int h eta cos theta-2cos theta-2sqrt(3)s int_(h eta)+sqrt(3)=0 in the interval (0,2 pi) is {(3 pi)/(4),(7 pi)/(4)} (b) {(pi)/(3),(5 pi)/(3)}{(3 pi)/(4),pi,(pi)/(3)(5 pi)/(3)}(d){(pi)/(6),(5 pi)/(6),(11 pi)/(6)}

For 0 cos^(-1)(sin theta) is true when theta belongs to (a) ((pi)/(4),pi)(b)(pi,(3 pi)/(2))(c)((pi)/(4),(3 pi)/(4)) (d) ((3 pi)/(4),2 pi)

The number of solution(s) of the equation cos2theta=(sqrt(2)+1)(costheta-1/(sqrt(2))) , in the interval (-pi/4,(3pi)/4), is 4 (b) 1 (c) 2 (d) 3

If f(x)={(-1, if x 0)) and g(x) =sinx+ cos x, then points of discontinuity of (fog)(x) in (0,2pi) are (A) pi/4,(5pi)/4 (B) pi/4,(3pi)/4 (C) pi/4,(7pi)/4 (D) (3pi)/4,(7pi)/4

If 4cos^(2)theta=3 then theta =---- 1) (pi)/(6),(5 pi)/(6) 2) (pi)/(4),(3 pi)/(4) 3) (pi)/(3),(2 pi)/(3) 4) +-(pi)/(2)

The solutions of the equation sin x+2sin2x+sin3x=cos x+3cos2x+cos3x in the interval 0<=x<=2 pi, are (pi)/(8),(5 pi)/(8),(2 pi)/(3)(b)(pi)/(8),(5 pi)/(8),(9 pi)/(8),(13 pi)/(8)(1 pi)/(3),(9 pi)/(3),(2 pi)/(3),(13 pi)/(8) (d) (pi)/(8),(5 pi)/(8),(9 pi)/(3),(4 pi)/(3),(4 pi)/(3),(9 pi)/(3),(2 pi)/(3),(13 pi)/(8)(d)