Question

prove that (sinA-cos A + 1)/(sin A+ cos A-1)= cosA/1- sin A​

Answer 1

we can write this as ,

LHS, {sinA-(cosA-1)} {sinA+(cosA-1)}

= {sin sq A-(cosA-1) sq }

= sina sq - ( cos a sq + 1- 2cos a)

= sina sq -cos a sq -1 + 2cos a

hope u can do after this....