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anonymous
 one year ago
Use the squared Identities to simplify 2cos^2 (x) * cos^2 (x)
anonymous
 one year ago
Use the squared Identities to simplify 2cos^2 (x) * cos^2 (x)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@ganeshie8 @JackJordan

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0uhmm... how simple do you want it I mean an easy one would be just 2cos^4(x) lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0a) 1cos(4x) / 4 b) 1+4cos(2x)+cos(4x) / 4 c) 1+cos(4x) / 4 d) 1+4cos(2x)cos(4x) / 4

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0are you sure you haven't miswritten the second one?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0b) 1+4cos(2x)+cos(4x) / 4

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2write both \(\cos^2 x = \dfrac{1\cos 2x}{2}\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It must be a typo... I'm getting 1+4cos(2x)+cos(4x) + 3 / 4 sorry.

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2***\(\cos^2 x = \dfrac{1+\cos 2x}{2}\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0elementary mistake hartnn

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So my attempt leads to something similar to B but with +3 at the end. Either I'm wrong (not likely) or the question is wrong.

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2then using the same identity you'll need to write \(\Large \cos^2 2x = \dfrac{1+\cos 4x}{2}\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry to everyone. I am so sorry

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i must've made a huge typo

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the question is 2sin^2 (x) cos^2x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sin. not cos. i can't believe i made that mistake.

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2okk, then write \(\large \sin^2 x = \dfrac{1\cos 2x}{2}\) thats the only difference

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Dang it I knew you made that mistake! Lol, it gives a difference of two squares at the top. I already did that. The answer is a. Can you see why?

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2I'd like to see sbsbrand's attempt! :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yay it worked! thanks everyone that stayed to help me even tho i wrote the question wrong.......XD
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