If sec \theta = \dfrac{17}{8}, verify that  \dfrac{3-4 sin^2 \th | Filo
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Class 10

Math

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Introduction to Trigonometry

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If sec verify that 

Solution: Given :
or

Where k is any positive.
By pythagoras theorem:




Find sin and using their definition:

   

 

 Now,
 LHS
 


 


 RHS:
 

 


 

 LHS = RHS

 Verified.
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