Option C : has the same value as
Explanation:
It is given that to find the same value as from the 4 options.
Now, we shall find the value of
The value of is -1.
Thus, the value of is -1.
Option A :
Using the identity ,
Since, the value of is 0. Thus, we have,
Hence, the value of is undefined.
Thus, the value of is not the same as value of
Therefore, Option A is not the correct answer.
Option B :
The value of is undefined.
Thus, the value of is not the same as value of
Therefore, Option B is not the correct answer.
Option C :
Since, Substituting, we have,
Thus, the value of is the same as the value of
Therefore, Option C is the correct answer.
Option D :
Rewriting the angles,
Simplifying, we get,
The value of is undefined.
Thus, the value of is not the same as the value of
Therefore, Option D is not the correct answer.