Question

MOHON BNTUANNYA?
1. (sin A/1+cos A)+(sin A/1-cos A)=
2. (cosec A-cos A) (1+cos A) =

Answer 1

1) sin(A)/(1 + cos(A)) + sin(A)/(1-cos(A))
= (sin(A) - sin(A)cos(A) + sin(A) + sin(A)cos(A))/(1 - cos²A)
= 2sin(A)/sin²A
= 2/sin(A)
= 2 cosec(A)

2) males ngerjain, hasilnya gak enak.....