Simply Simple

We have $\cos{1}\times\cos{2}\times........\times\cos{90}\times.......\times\cos{121}$

As $\cos{90} = 0$ . The above equation is equal to $\boxed{0}$ .

We have $cos(90)=0$ so $0 \cdot$ "a number" $=0$

$$ View Trigonometric Trap

Lol nice try

Nice trick question for Level 1!