MathematicsIf tanA= 4 3 ,   then which of the following is the value of the expression cotA  ?

If tanA= 4 3 ,   then which of the following is the value of the expression cotA  ?


  1. A
    1 2  
  2. B
    5 4  
  3. C
    4 3  
  4. D
    3 4   

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    Solution:

    The given trigonometric ratio is,
    tanA= 4 3  
    Apply the following:
    cotA= 1 tanA  
    cotA= 1 4 3  
    cotA= 3 4  
    Therefore, if tanA= 4 3 , then cotA= 3 4 .  
    Hence, option (4) is correct.
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