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

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

thank you ..

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- November 21st 2009, 06:48 AMmike--1988trigonometry (compound angles)
hi (Hi), im stuck with this final question.

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

thank you .. - November 21st 2009, 07:33 AMskeeter