Question

sin330º. cos 120° + cos210°.sin 300º =​

Answer 1

Step-by-step explanation:

• sin330°=-sin30°=(-1/2)
• cos120°=-cos60°=(-1/2)
• cos210°=-cos330°=-√(3)/(2)
• sin300°=-sin60°=-√(3)/(2)
• sin330°.cos120°+cos210°.sin300°
• (-1/2).(-1/2)+-√(3)/(2).-√(3)/(2)
• 1/4+3/4=
• 1

Answer 2

Answer:

hope that this may helps u bro/sis