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please help!!!! i need to know the horizontal tangents of sin(25x) and the vertical tangents of cos(25x). I got answers of 0 and pi/25 and 25pi/2 and 75pi/2, but my online hw says that theyre wrong
 one year ago
 one year ago
please help!!!! i need to know the horizontal tangents of sin(25x) and the vertical tangents of cos(25x). I got answers of 0 and pi/25 and 25pi/2 and 75pi/2, but my online hw says that theyre wrong
 one year ago
 one year ago

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richywBest ResponseYou've already chosen the best response.0
\(f(x)=\cos(25x)\) has no vertical tangent lines, are you in cartesian coordinates?
 one year ago

richywBest ResponseYou've already chosen the best response.0
for the first one you can just take the derivative and set it equal to zero. so \[\frac{d}{dx}(\sin25x)=\cos (25x)\cdot\frac{d}{dx}25x=25\cos (25x)\]
 one year ago

collegegirl89Best ResponseYou've already chosen the best response.0
yeah the interval is from 0 to 2pi
 one year ago

collegegirl89Best ResponseYou've already chosen the best response.0
i thought that cos(25x), when set equal to 0 yielded pi/50 and 3pi/50
 one year ago
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