Question 9 Given that sin(a) = and cos(b) 3 6 with a and b both in the interval find the exact values of sin(a + b) and cos(a - b). Step 1: Since sin(a) 1 = and a in the interval 3 cos(a) = Step 2: Since cos(b) sin(b) = Step 3: cos(a - b) = Check Answer Question 10 2 = and b in the interval 0/4 pts 3 Details 0/3 pts 3 Details