Your Practice Set – Applications and Interpretation for IBDP Mathematics SE Production Limited 322 13.3 ( a ) ( i ) 0.64 ( ii ) sin 0.6 � �� ( b ) tan 0.75 � � 13.4 ( a ) ( i ) 9 40 � ( ii ) 9 sin 41 � � ( b ) 40 cos 41 � � � 14.1 ( a ) 0 x � , 6.28 x � or 12.6 x � ( b ) 4 14.2 ( a ) 0.524 x � or 2.62 x � ( b ) 1 14.3 ( a ) 3.14 x � , 6.28 x � or 9.42 x � ( b ) 7 14.4 ( a ) 0.262 x � , 0.785 x � or 1.31 x � ( b ) 4 15.1 ( a ) 1 3 3 ) cos 5 4 ( 2 x hx � � � � � � � � � ( b ) 4� ( c ) { : 8 2 } y y � � � � 15.2 ( a ) 7 4sin 4 ( 2 ) 3 x hx � � � � � � � � � ( b ) 2 � ( c ) 4 15.3 ( a ) 1 37 6sin ( 2 ) 3 x hx � � ( b ) 6 ( c ) 25 49 : 2 2 y y � � � � � � � � 15.4 ( a ) 12co () s 1 hx x � � � � ( b ) 12 ( c ) { : 13 11 } y y � � � Chapter 5 16.1 ( a ) 46.2 cm ( b ) 110 cm ( c ) 2 742 cm 16.2 ( a ) 44.2 cm ( b ) 68.2 cm ( c ) 2 265 cm 16.3 ( a ) OC 25.0 cm � ( b ) ( i ) 4.35 rad ( ii ) 2 1360 cm 16.4 ( a ) 0.96 rad � � ( b ) ( i ) 5.32 rad ( ii ) 2 53.9 cm 17.1 ( a ) 43.38 cm ( b ) AB 33.6 cm � ( c ) 77.0 cm 17.2 ( a ) 2 1.36 cm ( b ) 2 1.26 cm ( c ) 2 0.102 cm 17.3 ( a ) ˆ AOB 1.86 rad � ( b ) 2 226 cm ( c ) 2 109 cm 17.4 ( a ) 1.7 ˆ AO d B 6 ra � ( b ) 42.2 cm ( c ) 146 cm Exercise 14 Exercise 15 Exercise 16 Exercise 17