For all real values of x- x-2 2 x is equal toA- tan 2 xB- none of theseC- - 3 xD- tan x

The correct option is D tan x We have, cot x 2 cot 2x = cot x 2 cot^2 x 1/2 cot x = cot^2 x cot^2 x+1/cot x =1/cot x =tan x ...

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Trigonometric Ratios of Multiples of an Angle

For all real ...

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For all real values of x, cot x - 2 cot 2x is equal to

tan 2x

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tan x

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-cot 3x

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none of these

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