Value of tan((sin⁻¹x + cos⁻¹x)/2) when x = √3/2

Question

Evaluate:

\[ \tan\left(\frac{\sin^{-1}x + \cos^{-1}x}{2}\right) \quad \text{when } x = \frac{\sqrt{3}}{2} \]

Solution

We use identity:

\[ \sin^{-1}x + \cos^{-1}x = \frac{\pi}{2} \]

So,

\[ \tan\left(\frac{\sin^{-1}x + \cos^{-1}x}{2}\right) = \tan\left(\frac{\pi/2}{2}\right) \]

\[ = \tan\left(\frac{\pi}{4}\right) \]

\[ = 1 \]

Final Answer:

\[ \boxed{1} \]

Key Concept

Use the identity \( \sin^{-1}x + \cos^{-1}x = \frac{\pi}{2} \) to simplify expressions quickly.

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