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Mathematics 17 Online
OpenStudy (anonymous):

Can someone please help!!?!?! find sin 2x cos 2x and tan 2x from given info: tan x=-1/3 ,cosx>0 Use the formulas for lowering powers to rewrite the expression in terms of the first power of cosine a)sin^4x b) cos^4xsin^4x Use an appropriate half angle formula to find the exact value of the expression a) 2sin18degreescos18degrees Prove the identity a) cos^2 5x-sin^25x=cos10x b) tan 3x=3tanx-tan^3x/1-3tan^2x

OpenStudy (anonymous):

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