QUESTION 6 Use a graphing utility to select the correct graph the function. Functions Trigonometic functions A(x) = 2(sinxcosx) 2[ -sin x - cos x ) =0 O a . Ob. 2- O c. -2 -3- O d -2 - Oe. 2+QUESTION 7 Simplify the given expression algebraically. COS + X O a. -sinX O b. cost O c. 1 O d. sin x Oe-cosxQUESTION 8 Use the formula asin Bet bcos BO= Na' +b' cos(BO- C), where C = arctan(a/ b),a > 0, to find the trigonometric expression in the form asin Be+ bcos Be 5 Cos 8- * O a. 5 12 2 sin 8+ 512 2 cos e Ob. 5 /2 sin a_ 3~2 2 2 - cos e Oc. 5 42 - sin a- 3 /2 2 2 cos & Od. 5 /2 sin 8+ 5 /2 2 2 - cos a Oe. 5 2 2 cos eQUESTION 9 Use the product-to-sum formulas to select the product as a sum or difference. 4 cos - sin 10 O a. 7A 2 sin - sin 10 10 Ob. 7x 2 sin - + sin 10 10 O c. 7 7 2 sin + COS 10 10 O d. 2 cos COS 10 10 Oe. 7A 2 cos + COS 10 10QUESTION 10 Use the figure to find the exact value of the trigonometric function. To a = 10, b = 5 c = 4, = 3 sin 2 cr O a. 100 125 O b. 101 4 Oc. 10 125 Od. 5 101 O e. 125 100