Finish the Job Sum and Difference Identities Directions: Verify the sum and difference identities for sine and tangent. The initial steps are already done. (4 items x 10 points) 1. sin(a - B) = cos (" - (a - B)) s (( #-a) +B) . 2. sin(a + 8) = sin(a - (-B)) = sin a cos(-B) - cos a sin(-B)... 3. tan(a + 8) = = sin(a+ 3) costa+ ?) = sin a cos p + cos a sin f cosa cos f-sinasin f sin a cos p + cos a sin f cosa cos f cos a cos p-sinasing (cos ( cos # 4. tan(a - B) = tan(a + (-B)) tan a +tan(-#) 1-tan a tan(-8)"