If cot = 15/8, then evaluate (2+2sin)(1-sin)/(1+cos)(2-2cos)

1.	If cot = 15/8, then evaluate (2+2sin)(1-sin)/(1+cos)(2-2cos)
Answer» 15/under root 32 (2+2 sin A) (1-sin A)/(1+cos A) (2-2 cos A)= 2(1+sin A) (1-sin A)/2(1+cos A) (1-cos A)= (1-sin2A)/(1-cos2A)= cos2A/sin2A= cot2A= 225/64

Discussion