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What is the least value of 25 cosec ^2 x+36 ^2 x ?

Options

  1. A1
  2. B11
  3. C120
  4. D121

Correct answer

D. 121

Step-by-step solution

aligned & 25 cosec ^2 x+36 ^2 x . & Minimum value =( 25 + 36 )^2 & =(5+6)^2=(11)^2=121 aligned

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