If tan A-2 - 3-2- then 1 - cos A-1 - cos A -

Given that tan A/2 = 3/2. 1 + cos A/1 cos A = 2 cos^2 A/2/2 sin^2 A/2 = cot^2A/2 = (2/3)^2 = 4/9 ...

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Trigonometric Ratios of Multiples of an Angle

If tan A/2 = ...

Question

If tan $\frac{A}{2}$ = $\frac{3}{2}$ , then $\frac{1 + c o s A}{1 - c o s A}$ =

-5

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$\frac{9}{4}$

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$\frac{4}{9}$

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If tan $\frac{A}{2}$ = $\frac{3}{2}$ , then $\frac{1 + c o s A}{1 - c o s A}$ =

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