Problems with polar or phasor form

[compsystems]

Hello

Flags: HOME view & RAD MODE
1:
phasor2 := ( 4 ∡ (π/6) ); returns 3.46410161514+2*i //OK
but
phasor1 := ( √(2) ∡ 3*(π/4) ); "Syntax Error" // BUG

2:

PHP Code:

#cas
  testPhasor():= 
  BEGIN
    local phasor1, phasor2;
    phasor1  = ( √(2) ∡ 3*(π/4) );
    // phasor1  = ( sqrt(2) ∡ 3*(π/4) );
    phasor2 := ( 4 ∡ (π/6) );
    return { phasor2, phasor1 };
  END;
#end 


running testPhasor() from the HOME view, return program({},{},LOCAL {4.∡0.523598775598,1.41421356237∡2.35619449019},...
?


3: CAS VIEW

demoPhasor( ); returns
{4.∡0.523598775598,
1.41421356237∡2.35619449019}

Why in approx?, If the calculator is in symbolic calculation (CAS VIEW & EXACT MODE)