Question 80

If √$$(1 - cos^2A)/cosA$$ = x, then the value of x is

Solution

Expression : $$\frac{\sqrt{1-cos^2A}}{cosA}$$

$$\because (sin^2A+cos^2A=1)$$

= $$\frac{\sqrt{sin^2A}}{cosA}$$

= $$\frac{sinA}{cosA} = tanA$$

=> Ans - (C)

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