![ex. Find cos( )
sin(- )
ex. Find over the interval [0, ] if cos = - and tan > 0](https://image.slidesharecdn.com/newday5examples-130305143057-phpapp01/85/New-day-5-examples-3-320.jpg)
New day 5 examples
- 1. Exact Coordinates for P( ) Recall, P( ) = (cos , sin ) P( ) for - multiples P( ) = (0, 1) tan = P( ) = (-1, 0) P( ) = (1, 0) tan = P( ) = (1, 0) tan = P( ) = (0, -1) tan = tan( ) = sin cos tan(0) = 0 = 0 1 tan( ) = 1 = 0 tan( ) = 0 = 0 -1 tan( ) = -1 = 0
- 2. For multiples of P( ) = (- , ) P( )=( , ) tan = tan = P( ) =( - , - ) P( )=( ,- ) tan = tan = For tan( ) = sin( )= =1 cos( ) tan( ) = 1
- 3. ex. Find cos( ) sin(- ) ex. Find over the interval [0, ] if cos = - and tan > 0
- 4. For multiples of P( ) = (- , ) P( ) = ( , ) tan = tan = P( ) = (- ,- ) P( )=( ,- ) tan = tan = For tan( ) = sin( )= = = cos( )
- 5. Finally Coordinates for - multiples Just switch tan( )= = coordinates of For multiples of P( ) = (- , ) P( ) = ( , ) tan = tan = P( ) = (- ,- ) P( )=( ,- ) tan = tan =
- 6. ex. Find sin( ) tougher: cos(- ) sec( ) cos( ) csc(- ) sin( )
- 7. Assignment: Worksheet - Locating Angles Assignment #2