If `3^x=5^y=45^z ,` then a. `2/z=1/y-1/x` b. `2/y=1/x-1/z` c. `2/x=1/z-1/y` d. `x+y+z=0`

If 3^(x)=5^(y)=45^(z), then a.(2)/(z)=(1)/(y)-(1)/(x)b(2)/(y)=(1)/(x)-(1)/(z)c*(2)/(x)=(1)/(z)-(1)/(y)dx+y+z=0

2x+y-z=1 x-y+z=2 3x+y-2z=-1

1//x-1/y+1/z=4, 2/x+1/y-3/z=0, 1/x+1/y+1/z=2(x,y,z ne 0)

2x+y+z=1x-y+2z=-1,3x+2y-z=4

If cos^(-1)x+cos^(-1)y+cos^(-1)z=pi, then, a. x^2+y^2+z^2+x y z=0 b. x^2+y^2+z^2+2x y z=0 c. x^2+y^2+z^2+x y z=1 d. x^2+y^2+z^2+2x y z=1

The lines x-1=y=z is perpendicular to the line.....a) (x-2)/1=(y-1)/2=z/-3 b) x-2=y-2=z c) (x-2)/1=(y-1)/2=z/3 d)x=y=z/2

The plane which passes through the point (3,2,0) and the line (x-3)/1=(y-6)/5=(z-4)/4 is a. x-y+z=1 b. x+y+z=5 c. x+2y-z=1 d. 2x-y+z=5

x+y+z=1 x-2y+3z=2 5x-3y+z=3

If x > y > z >0, then find the value of cot^(-1)(x y+1)/(x-y)+cot^(-1)(y z+1)/(z y-z)+cot^(-1)(z x+1)/(z-x)

If x > y > z >0, then find the value of cot^(-1)(x y+1)/(x-y)+cot^(-1)(y z+1)/(z y-z)+cot^(-1)(z x+1)/(z-x)