hi (Hi), im stuck with this final question.

sin(A+B)sin(A-B) = sin^2A - sin2^2B

thank you ..

Printable View

- Nov 21st 2009, 07:48 AMmike--1988trigonometry (compound angles)
hi (Hi), im stuck with this final question.

sin(A+B)sin(A-B) = sin^2A - sin2^2B

thank you .. - Nov 21st 2009, 08:33 AMskeeter