SOLUTION: 18. write the expression as the sin,cos,tan
sin140cos50+cos140sin50
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Question 174441: 18. write the expression as the sin,cos,tan
sin140cos50+cos140sin50
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
You have to recognize that this is the formula for the DIFFERENCE of sines.
sin(140-50) = sin 90 = 1
R^2
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