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Solve the following equation for A, if tan 3 A = 1 - Mathematics

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Question

Solve the following equation for A, if tan 3 A = 1

Sum

Solution

tan 3 A = 1

tan 3 A = tan 45°

3 A = tan 45°

A = 15°

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Trigonometric Equation Problem and Solution
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Chapter 23: Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios] - Exercise 23 (C) [Page 297]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 23 Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios]
Exercise 23 (C) | Q 1.6 | Page 297
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