Question

Tan 15 - Cot 15 =
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Answer 1

Tan15 - Cot15

= sin15/cos15 - cos15/sin15

Answer 2

tan 15⁰ - cot 15 ⁰

where, tan 15° = √3 – 1/ √3 + 1

cot 15° = √3 + 1/ √3 - 1

tan 15⁰ - cot 15⁰ = √3 + 1/ √3 - 1 - √3 – 1/ √3 +1

= 0

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