sin (a + b) =?

0 ⤊

2006-12-18 04:52:23 · 4 answers · asked by wicked 1 in Science & Mathematics ➔ Mathematics

4 answers

This is the sine addition identity. It is equal to

sin(a + b) = sin(a)cos(b) + sin(b)cos(a)

Other related identities are:

sin(a - b) = sin(a)cos(b) - sin(b)cos(a)
cos(a + b) = cos(a)cos(b) - sin(a)sin(b)
cos(a - b) = cos(a)cos(b) + sin(a)sin(b)

2006-12-18 04:56:19 · answer #1 · answered by Puggy 7 · 0⤊ 0⤋

sin(a + b) = sin(a)*cos(b) + cos(a)*sin(b)

2006-12-18 05:05:58 · answer #2 · answered by vaibhav_arora71 1 · 0⤊ 0⤋

sin(a) cos(b) + cos(a) sin(b)

2006-12-18 06:26:59 · answer #3 · answered by T.M.M. 4 · 0⤊ 0⤋

=sina cosb+cosa sinb

2006-12-18 05:47:10 · answer #4 · answered by openpsychy 6 · 0⤊ 0⤋