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Mathematics 36 Online
OpenStudy (anonymous):

verify the identity cot(x)= (1+cos2(x))/(sin2(x))

OpenStudy (lizz123):

http://gyazo.com/87a2d9c8be95a9b983f43d07b6b0d2aa

OpenStudy (anonymous):

it's hard to get it. can you explain it a little more

OpenStudy (lizz123):

http://gyazo.com/e341c093d1b5f2e8268a1c1b50e62b81

OpenStudy (anonymous):

may you help me with another?

OpenStudy (lizz123):

sure

OpenStudy (lizz123):

tag me

OpenStudy (lizz123):

What is the question

OpenStudy (anonymous):

sin4(t)=4sin(t)cos^3(t)-4sin^3(t)cos(t)

OpenStudy (anonymous):

@lizz123

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