Solution
Expression : $$\frac{\sqrt{sec^2A-1}}{secA}$$
$$\because$$ $$(sec^2A-tan^2A=1)$$
= $$\frac{\sqrt{tan^2A}}{secA} = \frac{tanA}{secA}$$
= $$(\frac{sinA}{cosA})\div(\frac{1}{cosA})$$
= $$(\frac{sinA}{cosA})\times(cosA) = sinA$$
=> Ans - (C)
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