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hardequalsmath
 2 years ago
cos(2y)cos(y)  sin(2y)sin(y)
hardequalsmath
 2 years ago
cos(2y)cos(y)  sin(2y)sin(y)

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dan815
 2 years ago
Best ResponseYou've already chosen the best response.1http://www.maths.manchester.ac.uk/~cds/internal/tables/trig.pdf

dan815
 2 years ago
Best ResponseYou've already chosen the best response.1try some other trig identities in there if that doesnt simplify it

hardequalsmath
 2 years ago
Best ResponseYou've already chosen the best response.0so would it be cos2A * sin2A  2 sinA * cosA?

dan815
 2 years ago
Best ResponseYou've already chosen the best response.1it will simplify to cos(3y)

hayden4290
 2 years ago
Best ResponseYou've already chosen the best response.0just plug it in ur calc matway.com is a great one .... cos(3y)
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