Ok, I need Help with this I am going CRAZY... ({ Note: It's Very hard })

NO G-o-o-g-l-e Please

Thanks,
Me :P

It equals to 2

Step-by-step explanation:

H. 2
1-cos2 = sin2
1-son2 = cos2
=> 1+1=2

The concept that is useful in carrying out the given operation for this item is the fundamental principle of counting. For this problem, the number of ways in which Selena can choose an audio system for her car is equal to the product of 3, 4, and 2. Thus, the answer to this item is letter A.