Using trigonometric tables, find the value of sec(51.4)∘.
1.6029
1.2029
3.4876
4.4876
We know that
(0.1)∘ = 6′
⇒ (0.4)∘ = 24′
⇒ (51.4)∘ = 51∘24′
⇒ sec(51.4)∘ = 51∘24′ = 1.6029
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