K KZ New member Joined Apr 12, 2007 Messages 3 Apr 12, 2007 #1 The Question is: Identify the expression that completes the equation so that it is an Identity. cosX/1+sinX=? a)1-sinX/cosX b)cosX c)1+sinX/cosX d)1+cscX/cscX Thanks for all your help!!!
The Question is: Identify the expression that completes the equation so that it is an Identity. cosX/1+sinX=? a)1-sinX/cosX b)cosX c)1+sinX/cosX d)1+cscX/cscX Thanks for all your help!!!
skeeter Elite Member Joined Dec 15, 2005 Messages 3,204 Apr 12, 2007 #2 \(\displaystyle \L \frac{\cos{x}}{1+\sin{x}} \cdot \frac{1-\sin{x}}{1-\sin{x}}\) complete the multiplication and simplify the result to get one of the choices.
\(\displaystyle \L \frac{\cos{x}}{1+\sin{x}} \cdot \frac{1-\sin{x}}{1-\sin{x}}\) complete the multiplication and simplify the result to get one of the choices.
