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Evaluate : (cos^2(45 + theta) + cos^2(4...

Evaluate : ` (cos^2(45 + theta) + cos^2(45 - theta))/(tan(60^@ + theta) tan(30^@ - theta)) + cosec(75^@ + theta) - sec(15^@ - theta)`

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To evaluate the expression \[ \frac{\cos^2(45^\circ + \theta) + \cos^2(45^\circ - \theta)}{\tan(60^\circ + \theta) \tan(30^\circ - \theta)} + \csc(75^\circ + \theta) - \sec(15^\circ - \theta), \] we will follow these steps: ...
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