Wed April 18, 2012 By:
1. (SIN A-COS A +1)/(SIN A+COS A-1) = (1+SIN A)/COS A
2.(SIN^3 A+COS^3 A)/(1-2COS^2 A) = (SEC A-SIN A)/(TAN A-1)
3.(2COS^2 A-1)^2/(COS^4 A-SIN^4 A)=1-2SIN^2 A

i have some doubts on questions which follow.pls solve thm.THANK you

Expert Reply
Wed April 18, 2012
The answer to your first question is as follows:
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