sec30° এর মান কত?
A 2/√3
B √3/2
C 1/2
D √2
Solution
Correct Answer: Option A
sec30∘
= 1/cos30∘
= 1/(√3/2)
= 2/√3
= 1/cos30∘
= 1/(√3/2)
= 2/√3
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