Question 749375
{{{cos(0^o)=cos(360^o)=1}}} and
{{{sin(0^o)=sin(360^o)=0}}} so
{{{cos(0^o)-5sin(0^o)=1-5*0=1}}} and {{{cos(360^o)-5sin(360^o)=1-5*0=1}}}
 
{{{cos(180^o)=-1}}}
{{{sin(180^o)=0}}} so
{{{cos(180^o)-5sin(180^o)=-1-5*0=-1}}}