Answers

2015-04-07T20:01:09+05:30
(secA)(1-sinA)(secA + tanA)
= (1/cosA)(1-sinA)(1/cosA + sinA/cosA)
= (1-sinA/cosA)(1+sinA/cosA)
= 1-sin²A/cos²A
= cos²A/cos²A
= 1

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2015-04-07T20:11:37+05:30
secA (1-sinA) (secA+tanA) 
= (1/cosA) (1-sinA) (1/cosA+sinA/cosA) 
= (1/cosA) (1-sinA) (1+sinA) /cosA
= (1/cos²A) (1-sin²A) 
= (1/cos²A) (cos²A) 
= 1 

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