(sinθ-cosθ)^2

= sin^2 θ-2sinθcosθ-cos^2 θ

is this all?? what else can i do?

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- March 19th 2010, 03:19 AMsomanyquestionsTrigonometric identities.
(sinθ-cosθ)^2

= sin^2 θ-2sinθcosθ-cos^2 θ

is this all?? what else can i do? - March 19th 2010, 03:38 AMpickslides
Not sure what you are trying to do but

Also

and

Good luck! - March 19th 2010, 07:11 AMskeeter