Question 8 Consider x) =4 (30%?) . What is f(601) ? Use decimal notation in your answer. ( Hint: What is the period of f ?} Question 10 If cos x = A, cosy= B, sin x =C and siny=D, find an expression for sin (2xc ty) which onl involves A, B, C and D. Show and explain your work.Question 6 Fill in the blanks with appropriate numbers. Suppose sin(ac) = and a is in the interval [,, w] . Then cos(ac) = and tan(x) = (Your answers should be fractions in reduced/simplified form.)Question 7 Suppose :1: is in the interval [0,71'] , and it is not in the domain of tan($) . What is 003(2x) ? {Use decimal notation in your answer.) Question 9 Consider the function f(ac) = |ac - 5| + | +7|. (a) Write the function f(a) as a piece-wise defined function, where the pieces are linear functions. (That is, write f(a) using cases, as in Example 4 on page 6, but without using absolute values.) (b) Use part (a) to sketch the graph of the function (by hand)