Prove that: `(t a n(90^0-theta)s e c(180^0-theta)s in(-theta))/(s in(180^0+theta)cot(360^0-theta)cos e c(90^0-theta))=1`

Explanation

To prove the equation

\[ \frac{\tan(90^\circ - \theta) \sec(180^\circ - \theta) \sin(-\theta)}{\sin(180^\circ + \theta) \cot(360^\circ - \theta) \cos(90^\circ - \theta)} = 1, \]

we will simplify the left-hand side step by step.

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