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Mathematics 9 Online
OpenStudy (anonymous):

Prove

OpenStudy (anonymous):

(sinA+cosA)^4=1+4sinAcosA+4sin^2Acos^2

hartnn (hartnn):

[(s+c)^2 ]^2 = [......]^2

OpenStudy (anonymous):

sin^A+2sinAcosA+cos^2A

OpenStudy (anonymous):

(sin^2A+2sinAcosA+cos^2A)^2

hartnn (hartnn):

but sin^2 +cos^2 =1 this is standard!

OpenStudy (anonymous):

oh yes!!

hartnn (hartnn):

now you'll get it

OpenStudy (anonymous):

yup got it

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