If $A$ and $B$ are complementary angles, then the value of $\sin A\cos B+\cos A\sin B-\tan A\tan B+se{c}^{2}A-{\tan }^{2}A$ 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: