In this exercise, an Assertion is followed by the Reason. Mark the suitable answer from the given options:
| Assertion (A): | If \(\sec 5 A = \text{cosec}\: (A + 30^\circ)\), where \(5A\) is an acute angle, then the value of \(A\) is \(60^\circ\). |
| Reason (R): | \(\sec (90^\circ - \theta) = \text{cosec}\: \theta\), where \(\theta\) is an acute angle. |