esmeralda517
esmeralda517
26-06-2017
Mathematics
contestada
Help solving for x.
3sinx+4cosx=4.5
Respuesta :
thiebes
thiebes
26-06-2017
Hope you can make this out.
First use the pythagorean relation that sin^2x + cos^2x = 1 and solve for cosx using the quadratic equation, then arccos of the two results gives you two angles. Both are correct.
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