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    5. If sec x - tan x = 1/3, find sec x + tan x:

    Question

    If sec x - tan x = 1/3, find sec x + tan

    x:
    A 3 Correct Answer Incorrect Answer
    B 2 Correct Answer Incorrect Answer
    C 5/3 Correct Answer Incorrect Answer
    D 4/3 Correct Answer Incorrect Answer

    Solution

    Using the identity (sec x - tan x)(sec x + tan x) = sec ²  x - tan ²  x = 1, (1/3)(sec x + tan x) = 1, so sec x + tan x = 3. Correct option: a

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