prove that cot theta - tan theta =2 cosec^2 theta -1/sin theta cos theta
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Step-by-step explanation:
nth term of an A.P (an) = pn + q
To find: Common Difference (d)
Proof: We know that,
an = a + (n – 1)d
⇒ pn + q = a + (n – 1)d [given]
⇒ pn + q – a = (n – 1)d
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