Question

Find a possible solution to the equation sin(3x+13) = cos(4x). fan and metal

Answer 1

good luck with that program
is this a real question?

Answer 2

i mean it cannot really be done without some sort of technology
here are the answers
http://www.wolframalpha.com/input/?i=sin%283x%2B13%29%3Dcos%284x%29

Answer 3

i wasnt able to find an answer

Answer 4

\[\Large\rm \sin(3x+13)=\color{orangered}{\cos(4x)}\]Since sine and cosine are co-functions, can't we just do this?
\[\Large\rm \sin(3x+13)=\color{orangered}{sin\left(\frac{\pi}{2}-4x\right)}\]And then,\[\Large\rm 3x+13=\frac{\pi}{2}-4x\]Which gives us one solution... x=-1.6327...