Verify the identity. sin (x + y) - sin (x - y) = 2 cos x sin y

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

What is the common difference for this arithmetic sequence? -6,-2,2,6,10 a.4 b.5 c.3 d.6

You are riding your bike and notice the square sign above. you mentally draw a straight line from point a to c. describe the angle relationship between dca and bca