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Question
If tan α =`5/12` find the value of sec α.
Sum
Solution
Given,
tan α =`5/12`
We know, sec2α = 1 +tan2 α
⇒ sec 2 α =`1+(5/12)^2 =169/144`
⇒ sec α `=± sqrt169/144 =± 13/12`
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