Question

cos 1 × cos 2 × cos 3 × ......... cos 180 = ?

Answer 1

cos1×cos2×cos3×cos4........cos180 will always give zero dude!!
because of cos90 as its value is 0 so on multiplying any no. with zero it gives zero..
Hope it helps you

Answer 2

the answer is 0

because cos1*cos*2....*cos90 = 0

because cos 90 is 0

cheers