Which one of the following triplets CANNOT be the angles made by a line in space with the three coordinate axes? a.`(pi/4,(3pi)/4,pi/2)` b. `(pi/4,pi/3,(2pi)/3)` c. `(pi/3,(3pi)/4,pi/3)` d. `(pi/4,pi/3,pi/4)`

Which one of the following triplets CANNOT be the angles made by a line in space with the three coordinate axes? a.((pi)/(4),(3 pi)/(4),(pi)/(2)) b.((pi)/(4),(pi)/(3),(2 pi)/(3)) c.((pi)/(3),(3 pi)/(4),(pi)/(3))d((pi)/(4),(pi)/(3),(pi)/(4))

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

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

sin((3pi)/(2)-pi/4)

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

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

(pi)/(4)+(2 pi)/(3)-(pi)/(6)

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)

In which of the following intervals the inequality, sinx < cos x < tanx < cot x can hold good ? (a) ((7pi)/4,2pi) (b) ((3pi)/4,pi) (c) ((5pi)/4,(3pi)/2) (d) (0,(pi)/4)

In which of the following intervals the inequality, sinx < cos x < tanx < cot x can hold good ? (a) ((7pi)/4,2pi) (b) ((3pi)/4,pi) (c) ((5pi)/4,(3pi)/2) (d) (0,(pi)/4)