Statement –I : The greatest value of the function $f\left(x\right)={\sin }^{2}x-20\cos x+1$  is 25.
Statement –II : The minimum value of $\frac{7}{4\sin x+3\cos x+2}$   is 1.
Which of the above statements are true
 

I)  $f^1\left(x\right)=2\sin x\cos x+20\sin x$   $f^1\left(x\right)=\sin \left(2x\right)+20\sin x$  $f^{11}\left(x\right)=2\cos 2x+20\cos x$

for maximum are minimum  $f^1\left(x\right)=0$  ,  $x=0,x=\pi$  If  $x=\pi \Rightarrow f^{11}\left(\pi \right)<0$ 

II) Minimum of  $\text{f}\left(\text{x}\right)\text{=}\frac{\text{7}}{\text{max.value of}\left(\text{4sinx+3cosx+2}\right)}$