The value of cos1° cos2° cos3° ............. cos177° cos178° cos179° is?
B. $$\frac{1}{2}$$
C. 1
D. $$\frac{1}{{\sqrt 2 }}$$
Answer: Option A
Solution (By Examveda Team)
cos1° cos2° cos3° ............. cos177° cos178° cos179°= cos90°
= 0[0 will make whole series 0]
= 0
This Question Belongs to Arithmetic Ability >> Trigonometry
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