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UPSC NDA I 2019 Mathematics Solved Paper
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© examsnet.com
Question : 59
Total: 120
What is the value of cos 46° cos 47° cos 48° cos 49° cos 50°...cos 135° ?
[NDA I 2019]
−1
0
1
Greater than 1
Validate
Solution:
👈: Video Solution
(B)
Clearly in the given product are value is cos90° which is zero, hence given product is zero.
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