Jawapan

2016-09-19T19:48:07+08:00
Sin x° = sisi bertentangan/hipotenus
=DC/BD
hipotenus tak tau jadi kita cari,
BD = √12² + 5²
= √169 = 13cm
sin x° = 5/13 = 0.3846

tan y° = sisi bertentangan/sisi bersebelahan
= AE/ED
tan y° =12/7 = 1.7143

sin x° + tan y° = 0.3846 + 1.7143
=2.0989