# NCERT Solution X

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Education

Published on July 1, 2008

Author: psysolution

Source: authorstream.com

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.

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