જો ઉપવલય \(\frac{{{x^2}}}{{27}} + \frac{{{y^2}}}{3} = 1\) પરના બિંદુએથી બનાવેલ સ્પર્શક યામાક્ષોને બિંદુ \(A\) અને \(B\) માં છેદે તથા \(O\) એ ઉંગમબિંદુ હોય તો ત્રિકોણ \(OAB\) નું ન્યૂનતમ ક્ષેત્રફળ ચો. એકમ માં મેળવો.

A \(3\sqrt 3\)
B \(\frac {9}{2}\)
C \(9\)
D \(\frac {9}{\sqrt 3}\)

Verified Solution

Answer & Solution

Correct Answer

(C) \(9\)

Step-by-step Solution

Detailed explanation

Equation of tangent to ellipse \(\frac{x}{{\sqrt {27} }}\cos \theta + \frac{y}{{\sqrt 3 }}\sin \theta = 1\) Area bounded by line and co-ordinate axis \(\Delta = \frac{1}{2}.\frac{{\sqrt {27} }}{{\cos \,\theta }}.\frac{{\sqrt 3 }}{{\sin \theta }} = \frac{9}{{\sin 2\theta }}\)…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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