Jawab:
3/2 + √2
Penjelasan dengan langkah-langkah:
sin (360° - θ) = -sin θ
cos (180° + θ) = -cos θ
csc (180° + θ) = -csc θ
sin 330° + 2 cos 240° - csc 225° + tan² 60°
= sin (360° - 30°) + 2 cos (180° + 60°) - csc (180° + 45°) + (√3)²
= -sin 30° + 2(-cos 60°) - (-csc 45°) + 3
= -½ - 2(½) + √2 + 3
= 3/2 + √2
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Jawab:
3/2 + √2
Penjelasan dengan langkah-langkah:
sin (360° - θ) = -sin θ
cos (180° + θ) = -cos θ
csc (180° + θ) = -csc θ
sin 330° + 2 cos 240° - csc 225° + tan² 60°
= sin (360° - 30°) + 2 cos (180° + 60°) - csc (180° + 45°) + (√3)²
= -sin 30° + 2(-cos 60°) - (-csc 45°) + 3
= -½ - 2(½) + √2 + 3
= 3/2 + √2