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

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

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

The angle between the circles x^(2)+y^(2)-4x-6y-3=0 . x^(2)+y^(2)+8x-4y+11=0 ( 1 - (pi)/(2) 2 - (pi)/(4) 3- (pi)/(3) 4- ( pi)/(6) )

The angle between the circles x^(2)+y^(2)-4x-6y-3=0 x^(2)+y^(2)+8x-4y+11=0 , 1.)(pi)/(2) 2.) (pi)/(4) 3.) (pi)/(6) 4.)(pi)/(6)

The angle between the lines whose direction cosines satisfy the equations l+m+n=0 and l^(2)=m^(2)+n^(2) is (1) (pi)/(3)(2)(pi)/(4)(3)(pi)/(6) (4) (pi)/(2)

Value of expression sin^(2)(pi)/(6)+cos^(2)(pi)/(4)-sec(pi)/(3) is

sin(pi)/(4)*sin(3 pi)/(4)*sin(5 pi)/(4)*sin(7 pi)/(4)=

pi/4 + pi - pi/3 - pi/6

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

The value of (1)/(sqrt(2))"sin"(pi)/(6)"cos"(pi)/(4)-"cot"(pi)/(3)"sec"(pi)/(6)+(5"tan"(pi)/(4))/("12sin"(pi)/(2)) is equal to