tolong ni caranya saya belom sma sekali ngerti mencari nilai trigonometeinya , 1) ( sin 150 + cos 60 ) / ( tan 225 - sin 300 ) =.... 2) ( cos 135 + sin 30

1) (sin 150° + cos 60°) / (tan 225° - sin 300°)
=> (sin 30° + sin 30°) / (tan 45 - (-sin 60°))
=> (2 × ½) / (1 + ½√3)
=> 1/(1+½√3)
=> (1-½√3)/(1-¾)
=> (1-½√3)/¼
=> (1-½√3) × 4
=> 4 - 2√3

2) (cos 135° + sin 30°) / (tan 45° - cos 315°)
=> ((-cos 45°) + sin 30) / (tan 45° - cos 45°)
=> ((-½√2)+½) / (1-½√2)
=> (½-½√2)(1+½√2) / (1-½)
=> (½+¼√2-½√2-½) / ½
=> (¼√2-½√2) × 2
=> ½√2 - √2