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Mathematics 20 Online
OpenStudy (anonymous):

Factor the algebraic expression below in terms of a single trigonometric function. sin 2x + sin x - 2

OpenStudy (anonymous):

sin^2x + sinx - 2

OpenStudy (anonymous):

@hartnn Can you help?

OpenStudy (anonymous):

@micahwood50 Can you help?

OpenStudy (anonymous):

@precal Can you help?

OpenStudy (anonymous):

@zordoloom Can you help?

OpenStudy (precal):

need to use a double angle identity

OpenStudy (anonymous):

@precal So sin^2x + cos^2x = 1 ?

OpenStudy (precal):

no that is a pythagorean identity

OpenStudy (anonymous):

Ok then what is a double angle identity?

OpenStudy (precal):

|dw:1352044711892:dw|which one is it

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