Questions on Principal Value

Questions based on General and Principal Solutions

If sinx-cosx=0 then find the principal value of x

I) Principal value of cos theta=-1 is pi II) Principal value of sin theta=0 is pi Which of the above statement is correct?

I) Principal value of cos theta=-1 is pi II) Principal value of sin theta=0 is pi Which of the above statement is correct?

What is the principal value of tan^(-1)(tan((2 pi)/(3)))

Q.Find the principal value of tan^(-1)(tan9(pi)/(8))

-(2pi)/(5) is the principal value of

If sin theta=-1, then the principal value of theta is

Find the principal value of [cos^(-1)cos(-680^(@))]

Find the principal value of tan^(-1)(1)