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 one year ago
Okay here is the deal, I am studying to test out of two math classes, I need someone to show step by step how to Sum of products in trig and Cos laws I have problems this not a the test. i am only studying. I will be attending IU east online this summer studying math. Please show me how to do it not give me answers only thanks.
 one year ago
Okay here is the deal, I am studying to test out of two math classes, I need someone to show step by step how to Sum of products in trig and Cos laws I have problems this not a the test. i am only studying. I will be attending IU east online this summer studying math. Please show me how to do it not give me answers only thanks.

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godorovg
 one year ago
Best ResponseYou've already chosen the best response.1here is the problem cos6x+cos2x=0

inkyvoyd
 one year ago
Best ResponseYou've already chosen the best response.0two tips that are meant as general self study guidelines: sign up for a free account on wolfram alpha, and use stepbystep solution after entering equations. Use resources such as Khan Academy, Purple Math (I believe), Wikipedia, and SOS math (I believe). I think paul's online math notes has good info too. Note that I have given you 7ish names and no links  trust me, these worked for me, especially the first, if you do not have openstudy to help you. Good luck, and have fun!

calmat01
 one year ago
Best ResponseYou've already chosen the best response.0Youtube also has some good math videos. Just type in sum and difference trig identity and you should find what you are you looking for.

godorovg
 one year ago
Best ResponseYou've already chosen the best response.1I know you plug in for this I am just not how?

godorovg
 one year ago
Best ResponseYou've already chosen the best response.1so we use this form in cosucosv=1/2{cosuv)+cos(u+v0} so now we plug in?

calmat01
 one year ago
Best ResponseYou've already chosen the best response.0Cos u+Cos v =2Cos((u+v)/2)Cos((uv)/2)

calmat01
 one year ago
Best ResponseYou've already chosen the best response.0So now just make the appropriate substitutions for u and v.

godorovg
 one year ago
Best ResponseYou've already chosen the best response.1when plugging in for U and v does the 1/2 mean a power?

calmat01
 one year ago
Best ResponseYou've already chosen the best response.0No, it's multiplying the sum and difference of the two angles by 1/2.

godorovg
 one year ago
Best ResponseYou've already chosen the best response.1cosucosv=1/2 cos 6x+cos2x=0

godorovg
 one year ago
Best ResponseYou've already chosen the best response.1is this right so far?

calmat01
 one year ago
Best ResponseYou've already chosen the best response.0Actually, it should be 2cos4xcos2x=0

godorovg
 one year ago
Best ResponseYou've already chosen the best response.1okay that is what I need help with?

calmat01
 one year ago
Best ResponseYou've already chosen the best response.0Sum of 6x and 2x is 8x divided by 2 is 4x. Difference of 6x and 2x is 4x divided by 2 is 2x.

calmat01
 one year ago
Best ResponseYou've already chosen the best response.0You do not take halfe of each angle you take half of their sum and then half of their difference.

godorovg
 one year ago
Best ResponseYou've already chosen the best response.1so you add 6+2= 8 and than divide the sums by 2?

calmat01
 one year ago
Best ResponseYou've already chosen the best response.0Yes, and then you do it again only use their difference.
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