x(C+D) (Factorization)

Question 1

sinC + sinD =

Answer 1

2sin(C+D / 2) . cos (C-D / 2)

Question 2

sinC - sinD =

Answer 2

2cos(C+D / 2) . sin (C-D / 2)

Question 3

cosC + cosD =

Answer 3

2cos(C+D / 2) . cos(C-D /2)

Question 4

cosC - cosD =

Answer 4

2sin (C+D / 2) . sin (D-C / 2)

Question 5

cosC - cosD =

Answer 5

-2sin (C+D / 2) . sin (C-D / 2)