The value of $\frac{Si{n}^2\theta }{Co{s}^2\theta }+\frac{{\displaystyle C}{\displaystyle o}{{\displaystyle s}}^2\theta }{Si{n}^2\theta }+6-(2+Se{c}^2\theta +Cose{c}^2\theta )$ is

 

Find the value of following equation:

${\left(\sec \varnothing -\tan \varnothing \right)}^2{\left(1+\sin \varnothing \right)}^2÷{\sin }^2 \varnothing =?$

If $3\sin \theta =2{\cos }^2\theta , 0^0<\theta <{90}^0$. Then the value of $({\tan }^2\theta +se{c}^2\theta -\cos e{c}^2\theta )$ is: