Gkseries in Quantitative aptitude

If sin2θ=cos3θ, then the value of (cot2θ-cot6θ) is

If sin²θ=cos³θ, then the value of (cot²θ-cot⁶θ) is:

a) 1

b) -1

c) 2

d) -2

Sol:

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quantitative aptitude

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