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anonymous
 one year ago
Which of the following choices is a simplification of sin 60°cos15°sin15°cos60°?
anonymous
 one year ago
Which of the following choices is a simplification of sin 60°cos15°sin15°cos60°?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can someone please help me with this

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1use the values here... http://www.embeddedmath.com/downloads/files/unitcircle/unitcircleletter.pdf

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1the x  coordinates are the cosine of the angle, the y coordinates are the sine of the angle

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1Each point on the circle radius 1 is ( cos(theta) , sin(theta) )

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so in this case, i feel like c (the third answer) is the right one? Is it correct?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1hint: sin(A  B) = sin(A)cos(B)  cos(A)sin(B)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea i'm having trouble to convert, it seems like the 3rd answer to me

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1ah i just about to say the sum formula

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1Is that a minus though after sin(15)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1I think the original problem should be sin 60°cos15°sin15°cos60°

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1Apply that sum formula first, here is a cheat sheet to remember properties and identities

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0JIm was correct, the original question is like what he said, it was a typo

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1yea, so apply this rule... sin(A  B) = sin(A)cos(B)  cos(A)sin(B)

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1since the question is exactly th eform of that right side

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I will go through your sugguested process again to confirm, thank you so much!

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1yeah, just have to recognize that form to simplify it with the identity thing, Either way, you could have just subbed all 4 values in and it would come out the same

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry idk i wish i could help doe

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0u should go on pathway

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438910967015:dw
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