W2 A.\s\\ EBB 



one root becomes infinite if w = - } ; 



4 'Hie roots are equal if ro = - ; the roots are real for all real 



values of m ; one root becomes infinitely great if m = 2 ; one root becomes 

 zero if m = ; the factors are 



6. Real and equal ; imaginary. 





8, 9. (l)ft = aV37; (2)6=1; 



m 



Page 19. Art. 16. 



1. 16 = -^ (r) =0.2618C> approximately; 60 =^ (r) = 1.0472W approxi- 

 mately; etc. " 



2. (r) =460; (r) =108- 1 W = 14- + W + 26.2- etc. 



, , , x 



Vio 



sinz = , cosx= ^-, tan = T 1 cotx = T 1, cscz = v^; etc. 



4. sin 30= J f cos 80= |V5, etc.; sin 45 = cos 46 = , etc.; sin 60 



\/2 



cos80= JV8, cos60= J, etc.; sin 90 = 1, cosOO = 0, etc.; 



JL, cos 136 = , etc. ; sin (- 46) = --!-, cos (- 46) = , etc. 





