# Math Help - Tangent equation for an equation

1. ## Tangent equation for an equation

The question is below:

Find the tangent equation for siny=e^xy at (0,pie/2). Thanks. (I know the first step is to use Natural log for both sides, then I got confused.)

2. so you dont use the slope formula (f'(theta)sin(theta) + f(theta)cos(theta)) /((f'(theta)cos(theta) - f(theta)sin(theta))

3. Originally Posted by nbluo
The question is below:

Find the tangent equation for siny=e^xy at (0,pie/2). Thanks. (I know the first step is to use Natural log for both sides, then I got confused.)
You don't have to. Just remember to use the chain rule on both sides