Tentukan nilai dari 2 sin 30°+ cos 60° - tan 45°+ sin 90°

=> 2 sin30° + cos60° - tan45° + sin90°
=> 2.1/2 + 1/2 - 1 + 1
=> 1 + 1/2 + 2
=> 1/2 + 3
=> 3/6 + 18/6
=> 21/6
=> 7/2

semoga membantu

2 kali 1/2 + 1/2 + 1 + 1 =
1 + 1/2 + 1 + 1 =
3 + 1/2 = 7/2