SOLUTION: Write as a trigonometry ratio of x, with the correct sign attached: sin(90°-x)

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Question 1060290: Write as a trigonometry ratio of x, with the correct sign attached:
sin(90°-x)
Answer by Edwin McCravy(20081) About Me  (Show Source):
You can put this solution on YOUR website!

The word "cosine", "CO SINE", is an abbreviation for COmplement's SINe.

90°-x is the COmplement of x, so sin(90°-x) is the 
COmplement of x's SINe, so 

sin(90°-x) equals cos(x).

Edwin