# 16.  then  is equal to        (A)            (B)            (C)    0        (D)

Answers (1)

Given the equation:

we can migrate the  term to the R.H.S.

then we have;

or                                ............................(1)

from

Take       or    .

So, we conclude that;

Therefore we can put the value of  in equation (1)  we get,

Putting x= sin y, in the above equation; we have then,

So, we have the solution;

Therefore we have .

When we have , we can see that :

So, it is not equal to the R.H.S.

Thus we have only one solution which is x = 0

Hence the correct answer is (C).

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