Letter to a Friend Use this page to turn in the final draft of the letter you would write to your friend describing
the similarities and differences between the three trigonometric ratios: Sine, Cosine, and
Tangent. Remember, you must include details such as when the trig ratios can (and cannot) be
used, and why they are helpful when solving problems. Use specific examples of times you
could use Sine, Cosine, or Tangent to solve real-life problems. Your final draft must be in pen, or
typed, printed, and attached to this page. Put this in your Final Portfolio when you are done.