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can someone please help me with this
use the values here... http://www.embeddedmath.com/downloads/files/unitcircle/unitcircle-letter.pdf
the x - coordinates are the cosine of the angle, the y- coordinates are the sine of the angle
Each point on the circle radius 1 is ( cos(theta) , sin(theta) )
so in this case, i feel like c (the third answer) is the right one? Is it correct?
didnt calculate.. umm
hint: sin(A - B) = sin(A)cos(B) - cos(A)sin(B)
yea i'm having trouble to convert, it seems like the 3rd answer to me
ah i just about to say the sum formula
Is that a minus though after sin(15)
I think the original problem should be sin 60°cos15°-sin15°cos60°
could it be #A?
JIm was correct, the original question is like what he said, it was a typo
yea, so apply this rule... sin(A - B) = sin(A)cos(B) - cos(A)sin(B)
since the question is exactly th eform of that right side
sin(60 - 15) = sin(45)
root 2 over 2
I will go through your sugguested process again to confirm, thank you so much!
yeah, 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
sorry idk i wish i could help doe
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it rally helps