If \( a \cot \theta+b \operatorname{cosec} \theta=p \) and \( b \cot \theta+a \operatorname{cose...
If \( a \cot \theta+b \operatorname{cosec} \theta=p \) and \( b \cot \theta+a \operatorname{cosec} \theta=q \), then \( p^{2}-q^{2}= \)
(W)
(a) \( a^{2}-b^{2} \)
(b) \( b^{2}-a^{2} \)
(c) \( a^{2}+b^{2} \)
(d) \( b-a \)
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