rad

  1. P

    how come we know that i is 90 degrees or ~1.57 rad?

    how come we know that i is 90 degrees or ~1.57 rad I cannot understand how come we know this?
  2. R

    How we know the answer of tan-1 of polar will be system Deg or rad

    Hi How we know the answer of tan-1 of polar will be Deg or rad in calcolator because i see in some questions the solving was Deg and anthor by rad for example (write in polar) 1) -8 + 5i ----- > here we use rad to find tan-1 2) -3 - 5i ------> here we use deg to find tan-1...
  3. J

    x in deg. and rad. in terms of sin

    Hi I need help with the following please? Find X in radians, in terns of pi: sin x = 1/radical 2 Fine X in degrees, to nearest tenth: sin x = .35 THANK YOU