Student Problem: Unit R Concept 2

• What is this problem about?
• This problem goes over Unit R Concept 2, using sum and difference formulas.  We are finding the answers to sin(u+v) and tan(u-v).
• What must the reader pay close attention to?
• The reader must notice that this triangle is in Quadrant II, so the x value is negative.
• The reader must also pay attention when solving tan(u-v) and remember to multiply by the reciprocal to cancel out the denominator.