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If x in (0,2pi)a n dy in (0,2pi) , then ...

If `x in (0,2pi)a n dy in (0,2pi)` , then find the number of distinct ordered pairs `(x , y)` satisfying the equation `9cos^2x+sec^2y-6cosx-4secy+5=0`

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
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