Help please! thanks for everyone who help!

Thanks Again for the help!!

First one

Area  =  (1/2) (WX) (WY)  sin W  =  (1/2) (10.3)(12.8) sin ( 63°)  ≈  58.7 in ^2 

Second one

arc length  =   r *  central angle  in radians

(7/15)pi  = 14  *  central angle        divide  both  sides  by 14

(1/14) (7 / 15) pi  =   central angle  =  (7 / 210) pi   =  (1/30)pi

Last  one

sin θ  =  -  sqrt  [ 1  -  cos^2 theta ] =  - sqrt  [ 1 -  2/9 ]  =  - sqrt [ 7] / 3

sin B  =  4/5     cos B  = 3/5

sin ( θ  + B)    = sinθ cos B  + sin B cos θ   =   [ - sqrt (7)/3 ] [ 3/5]  +  [ 4/5] [ -sqrt (2) / 3   ]  =

[ -3sqrt (7)  - 4sqrt (2)  ] /  15