A pressure of 1200 lbs per it is exerted by 3 i gas in a cylinder. If a piston pushes into the
cylinder until the volume is 2 ft", what will be tt
pressure exerted by the gas?

Angle sum property:
55+angle+90= 180
angle=180-145
=35
If the use of calculator is permitted then calculate 1/cos 35 (or sec 35) and you will get 1.22 approximately.
Reason for doing this was that x(hypotenuse)/10(perpendicular) = sec theta .
therefore now you get:-
x/10=1.22
multiply both sides by 10 and get
x= 12.2
Answer is Option A.