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Question
Using trigonometric tables, find the approximate value of sec 58°.
Sum
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Solution
Given: Find sec 58° using trigonometric tables.
Step-wise calculation:
1. From trigonometric tables, cos 58° ≈ 0.5299.
2. `sec 58^circ = 1/cos 58^circ`
= `1/0.5299 ≈ 1.8871`
sec 58° ≈ 1.8871.
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