UPSKILL MATH PLUS

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In this exercise, an Assertion is followed by the ReasonMark 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 \(10^\circ\).
Reason (R):\(\sec (90^\circ - \theta) = \cos \theta\), where \(\theta\) is an acute angle.