SOLUTION: Find the slope and the elevation of the tangent to the graph of y=cos 2x where x=2.4 radians.

Algebra ->  Trigonometry-basics -> SOLUTION: Find the slope and the elevation of the tangent to the graph of y=cos 2x where x=2.4 radians.      Log On


   

Question 1037722: Find the slope and the elevation of the tangent to the graph of y=cos 2x where x=2.4 radians.
Found 2 solutions by solver91311, Alan3354:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!






The result of the calculation is the slope of the tangent, and the inverse tangent of that value is the elevation.

John

My calculator said it, I believe it, that settles it

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find the slope and the elevation of the tangent to the graph of y=cos 2x where x=2.4 radians.
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y = cos(2x)
y' = -2sin(2x)
Slope = y'(2.4) = -2sin(4.8) =~ 1.99233
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If by elevation you mean the y value:
y(2.4) = cos(4.8) =~ 0.0875