If `y = sin (In x)`, then which one of thefollowing is correct?

If y = sin (l n x) , then which one of the following is correct ?

Which of thefollowing is incorrect?

If f:R rarr R be defined as f(x)=sin(|x|) then which one of the following is correct?

If tan^2 y cosec^2 x – 1 = tan^2 y , then which one of the following is correct ?

In a triangle ABC, (sin A+ sin B+ sin C) (sin A+sin B-sinC)= 3 sin A sin B, then which one of the following is correct ?

Which of thefollowing is true?

Which of thefollowing is true?

If x/(y+z) = y/(z+x) = z/(x+y) then which one of the following is correct ?

If |(y,x,0),(0,y,x),(x,0,y)|=0 and x ne 0 , then which one of the following is correct ?