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Q.


Here, Question Image

State whether it is true or not?


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a

True

b

False
 

answer is A.

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Detailed Solution

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We can take the LHS,
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We know that trigonometric functions have a period of 
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Now we can substitute equations (1), (2), (3) and (4) in the LHS. So, we get
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On cancelling the common terms, we get
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We have the RHS also equal to 1.
Therefore, L.H.S = R.H.S
So, the given statement is true.
 
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