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If x = cosec θ − cot θ, y = sec θ + tan θ, then

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If x = cosec θ − cot θ, y = sec θ + tan θ, then 

(1) xy + 1 = x + y 

(2) xy + 1 = x − y 

(3) xy + 1 = y − x 

(4) xy = y − x

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1 Answer

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Best answer

Correct option (3) xy + 1 = y − x

Explanation:

xy = (cosec θ − cot θ) (sec θ + tan θ)

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