Nilai dari sin² 30° + 2 cos 45° + cos² 30°
Jawab:
sin 30° = ½
cos 45° = ½√2
cos 30° = ½√3
sin² 30° + 2 cos 45° + cos² 30°
=(½)² + 2(½√2) + (½√3)²
= ¼ + √2 + ¾
= 1 + √2
[answer.2.content]100 Things Dodgers Fans Should Know & Do Before They Die (100 Things...Fans Should Know)
100 Things Dodgers Fans Should Know & Do Before They Die (100 Things...Fans Should Know)
Jawab:
sin 30° = ½
cos 45° = ½√2
cos 30° = ½√3
sin² 30° + 2 cos 45° + cos² 30°
=(½)² + 2(½√2) + (½√3)²
= ¼ + √2 + ¾
= 1 + √2
[answer.2.content]