Q20
The value of cos1° cos2° cos3° ............. cos177° cos178° cos179° is?
A.
0
AnswerB.
C.
1
D.
Answer: Option A
Solution
Answer: Option A
Solution:
cos1° cos2° cos3° ............. cos177° cos178° cos179°= cos90°
= 0[0 will make whole series 0]
= 0