Question

The value of the expression cos1º.,cos2
cos3º. ........ cos 179º =?
A) -1 B) 0 c)1/√2 d)1​

Answer 1

Answer:

0

Step-by-step explanation:

cos 1× cos 2×cos 3×....×cos179

=cos 1× cos 2×cos 3×....×cos 90×.....×cos 179

=cos 1×cos 2× cos 3×.....×0×...cos179

=0×cos 1×cos 2×cos3×....× cos179

=0

Answer 2

Answer:

D) 1

All terms will get cancelled

Step-by-step explanation:

cosA=sec(90-B)

=secB

=1/secB

cosA*1/secA=1