Question:
The value of cos 1° cos 2° cos 3°… cos 179° is
A. 1/√2
B. 0
C. 1
D. –1
Solution:
B. 0
Explanation:
According to the question,
Since cos90° =0
We get,
⇒ cos 1° cos 2° cos 3°… cos90°… cos 179° = 0
Thus, option (B) 0 is the correct answer.
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