Solve: (1 + sin A)/cos A + cos A/(1 + sin A) = 2 sec A.

by

(i) \frac { 1+sinA }{ cosA } +\frac { cosA }{ 1+sinA } =2secA
(ii) \frac { tanA }{ secA-1 } +\frac { tanA }{ secA+1 } =2cosecA

Solution:

(i) \frac { 1+sinA }{ cosA } +\frac { cosA }{ 1+sinA } =2secA
L.H.S = \frac { 1+sinA }{ cosA } +\frac { cosA }{ 1+sinA }

ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 18 Trigonometric Identities Ex 18 Q17.1

ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 18 Trigonometric Identities Ex 18 Q17.2

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