यदि sin (A/2) = x, तो x का मान है

Question

(A) &radic;[(1+cos cos A)/2] (B) &radic;[(1-cos cosA)/2]&nbsp; (C) &radic;[(1-sin sinA)/2]&nbsp; (D) &radic;[(1+sin sinA)/2]&nbsp;

Jitender Kashyap · Accepted Answer

(B) &radic;[(1-cos cosA)/2]&nbsp;