Q13 of 29 Page 8

If sec θ + tan θ = m, prove that [CBSE 2004]

Given sec θ + tan θ = m


So we can write



Squaring both sides we get



Since cos2 θ = 1- sin2 θ


⇒


⇒


Applying Componendo & Dividendo i.e.



is equivalent to


we get





Hence Proved

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