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anonymous
 5 years ago
2 (cos^2 (2 t) + sin^2 (2 t))
I do not remember where to go next to simplify but I am trying for cos^2+sin^2=1
anonymous
 5 years ago
2 (cos^2 (2 t) + sin^2 (2 t)) I do not remember where to go next to simplify but I am trying for cos^2+sin^2=1

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0or i mean to ask what role does 2t take on

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0should i just use double angle?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i mean power reducing...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0imagine 2t as x, it's the angle; so cos^2 (x) + sin^2(x) = 1, then 2(1) = 2 ^_^

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i did the power reducing and got same thing, but thanks for that tip!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I believe you do have to use the double angle formula.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Use double angle formula since you cant really use (sinx)^2+(cosx)^2=1 on this example.

nowhereman
 5 years ago
Best ResponseYou've already chosen the best response.0That is nonsense! Of course you can use\[\sin^2 x + \cos^2 x = 1\] because you can plug in x = 2t without a problem.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0why do you need the double angle formula? that makes stuff so complicated, we already know that cos^2(x) + sin^2(x) = 1 x acts as an angle and it can be anything, 2t, w, z, c whateva form, it's still an angle

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0write it down on paper and you'll see what I mean @rg ^_^

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes, she is so right, I mean, every time I write it down on paper everything looks much more understandable, dont try to do everything in your head, unless ofcourse, you are doing maths just to increase your brains processing power... anyway.. it is a good idea to write it down...
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