The value of (sin 30°)/(cos ^2 45°)-cot 45°+sin 90°-7 cos 90° is:

$\frac{\sin 30°}{\cos ^2 45°}-\cot 45°+\sin 90°-7 \cos 90°$

Put the values of all the angles,

= \(\frac{1}{2}\) × \(\frac{2}{1}\) - 1 + 1 - 0

= 1