The Exocet hit the hanger which destroyed the helicopter and set of the fuel. If the ship is in a tight turn then the hull could be 45 degrees over and that's how it hit the hanger.
The Argentine had a carrier called 25th of May. This was carrying Skyhawks but due to the various and many human rights abuses of the Junta, the Americans had embargo spares for the Skyhawk. Which is why the Argentine went French and bought Etendards.
Some fools blames the French for this but forget UK tried to sell as much gear to the Argentine and some of this gear was used against the fleet. The bombs used were British bombs and Canberras too.
The French did stop any help and did fly Etendard Exocet profiles against RN to show what was what.
The Etendards would fly very low to the water. A few metres. Then pop up and do a radar sweep. If they find nothing then they rinse and repeat.
When they do get a radar contact, the coordinates are put into the Exocet and fired. The Etendard will sharp turn and flee as fast as they can. The Etendard can carry 2 Exocet but the attack profile was 1 Exocet and 1 fuel tank. They would refuel from C-130 tankers to give them the range.
The Etendard can carry bombs and guns and Magics but they were never used in more conventional attacks, purely Exocet. I assume in case they get more Exocet which never happened.
For the Royal Navy, the Etendard Exocet combo was a nasty shock as they were designed to fight against the Soviets so a more modern attack flown very well by western trained pilots was not on the cards.