Student Problem: Unit R Concept 3

• What is this problem about?
• This problem goes over Unit R Concept 3, trig of an inverse trig function.  We use the sum and difference formulas to solve.
• What must the reader pay attention to?
• The reader must see that I set each term equal to "u" and "v."  And from there, I bring the trig function over to the left side, set it equal to a value and solve.
• The reader must also pay attention to how sine looks at the y-value, while cosine looks at the x-value.