SOLUTION: Find the exact values of sin(2u), cos(2u), and tan(2u) using the double-angle formulas.
cot(u) = -5, 3π
2 < u < 2π
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Question 298029: Find the exact values of sin(2u), cos(2u), and tan(2u) using the double-angle formulas.
cot(u) = -5, 3π
2 < u < 2π
Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
Here are the double angle formulas:
cos 2u = 2cos^2 u − 1
sin2u = 2sinucosu
tan2u = (2tanu)/(1 - tan^2 u)
The value of u lies between 2pi and 2.
I'm sure you can do it now.
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