Q33 of 42 Page 193

If sec θ + tan θ = p then find the value of cosec θ.

It is given …(1)


We know that,


⇒



=


= …(2)


Adding (1) and (2)


We get


∴


⇒



We know







(∵ (a + b)2 = a2 + b2 + 2.a.b)




((∵ (a–b)2 = a2 + b2–2.a.b)



Now we know,





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