Question 751467
Complete the identity. 
1). cos θ - cos θ sin^2 θ = ?
{{{cos(x)1-sin^2(x)=cos(x)cos^2(x)=cos^3(x)}}} 
2). (1 / cos^2 θ) - (1 / cot^2 θ) = ?
{{{(1/cos^2(x))-(1/cot^2(x))=1/cos^2(x)-tan^2(x))}}}
{{{1/cos^2(x)-sin^2(x)/cos^2(x)=(1-sin^2(x))/cos^2(x)=cos^2(x)/cos^2(x)=1}}}