Question: When is small, find the approximate values of: a cos - 1 0 tan20 b 2(1-cos) - 1 tan - 1

When θ is small, find the approximate values of:a cos - 1 0 tan20 b 2(1-cos) - 1 tan -

a cos - 1 0 tan20 b 2(1-cos) - 1 tan - 1

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