Ex 3.2, 10 - Chapter 3 Class 11 Trigonometric Functions

Transcript

Ex 3.2, 10 Find the value of the trigonometric function cot ("– " 15"π" /4) cot ((−15 𝜋)/4) = – cot ((15 𝜋)/4) = – cot ("3" 3/4 "π" ) = – cot ("4π – " 1/4 " π" ) = – cot ((−1)/4 " π" ) = – ("– cot " (1/4 " π" )) = cot (1/4 " π" ) = cot (1/4 " × 180" ) = cot 45° = 1