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AP EAMCET202123 Aug 2021Morning ShiftMathematicsTrigonometric Ratios & IdentitiesActual

If 0 2 , 0 2 and ²⁰¹⁸ + cosec ²⁰¹⁸ =2 , then the value of ²⁰²⁰ + ²⁰²² =

Options

  1. A3 2
  2. B1 2²⁰²⁰
  3. C1
  4. D2

Correct answer

D. 2

Step-by-step solution

²⁰¹⁸ + cosec ²⁰¹⁸ =2 It is true for =0 and = / 2 aligned ²⁰²⁰ + ²⁰²² & = ²⁰²⁰ 0+ ²⁰²² 2 & =1+1=2 aligned

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