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Maths Trigonometrical Ratios, Functions and Identities JEE Main 2023 Numeric Response

Published by: CGP EDU Academic Team

Published on: August 13, 2026

The value of tan 9° - tan 27° - tan 63° + tan 81° is_____.

Text Solution

Verified by Experts

The correct answer is:

(4)

Given,

tan 9° - tan 27° - tan 63° + tan 81°

= (cot 81° + tan 81°) - (tan 27° + cot 27°)

=(tan 9° + cot 9°)-(tan 27° + cot 27°)

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