- #1
tatoo5ma
- 15
- 0
Hello,
I have to write [tex] {\it sina}+{\it sinb}+\sin \left( a+b \right) [/tex] as a product.
Here is what I began with, then I got stuck...
[tex] 2\,\sin \left( (a+b)/2 \right) \cos \left( (a-b)/2 \right) +{\it sina}\,{\it cosb}+{\it cosa}\,{\it sinb} [/tex]
Anyone please can help me out, that would be great, thank you!![Smile :smile: :smile:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I have to write [tex] {\it sina}+{\it sinb}+\sin \left( a+b \right) [/tex] as a product.
Here is what I began with, then I got stuck...
[tex] 2\,\sin \left( (a+b)/2 \right) \cos \left( (a-b)/2 \right) +{\it sina}\,{\it cosb}+{\it cosa}\,{\it sinb} [/tex]
Anyone please can help me out, that would be great, thank you!