Ex 3.2, 9 - Chapter 3 Class 11 Trigonometric Functions (Important Question)

Last updated at July 26, 2026 by

Ex 3.2, 9 - Find value of sin -11pi/3 - Chapter 3 Class 11 - Teachoo - Ex 3.2

part 2 - Ex 3.2, 9 - Ex 3.2 - Serial order wise - Chapter 3 Class 11 Trigonometric Functions

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Ex 3.2,9 Find the value of the trigonometric function sin (–11"Ο€" /3) sin ((βˆ’πŸπŸ 𝝅)/πŸ‘) = –sin ((11 πœ‹)/3) = –sin ("3 " 𝟐/πŸ‘ " Ο€" ) = –sin ("4Ο€ – " 𝟏/πŸ‘ " Ο€" ) = –sin ((βˆ’πŸ)/πŸ‘ " Ο€" ) Rough So, 11/3 = 3 2/3 = 3 + 2/3 or 4 – 1/3 We take 4 – 𝟏/πŸ‘ as it is even = – ("–sin " (1/3 " Ο€" )) = sin (𝟏/πŸ‘ " Ο€" ) = sin 60Β° = βˆšπŸ‘/𝟐

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