8.4,ix,x

Introduction to trigonometry : Introduction to trigonometry CHAPTER – 8 EXERCISE – 8.4

QUESTION 5:- 1 (ix) (cosec A – sin A) (sec A – cos A) = —-------------------- tan A + cot A : QUESTION 5:- 1 (ix) (cosec A – sin A) (sec A – cos A) = —-------------------- tan A + cot A

(1 + tan2 A ) = 1 – tan A 2 = tan2 A(1 + cot2 A ) 1 – cot A : (1 + tan2 A ) = 1 – tan A 2 = tan2 A (1 + cot2 A ) 1 – cot A

slide4 : THANK YOU LET ’s MEET AGAIN.