็How to Solve the system of equation

[Another1]

\(\displaystyle x_0\cos(\phi) = 2.78\)
\(\displaystyle x_0\sin(\phi)=2.78 \left( \frac{\gamma^2/2}{ \sqrt{10-\frac{\gamma^2}{4}}} \right)\)
\(\displaystyle x_0e^{-15\gamma} \cos\left(30\sqrt{10-\frac{\gamma^2}{4}}-\phi\right)=1\)

I don't know awsner of \(\displaystyle \phi , x_,\gamma\)

 

[HOI]

Start by dividing the second equation by the first. That removes "\(\displaystyle x_0\)" leaving an equation in $$\phi$$ and $$\gamma$$. Then divide the third equation by the first to also remove $$x_0$$ and get another equation in $$\phi$$ and $$\gamma$$.