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Q.

Here,
State whether it is true or not?

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a

True

b

False

answer is A.

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Detailed Solution

We can take the LHS,

We know that trigonometric functions have a period of 2π

Now we can substitute equations (1), (2), (3) and (4) in the LHS. So, we get

On cancelling the common terms, we get

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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