Question

find the value of sin330°.cos120°+cos210°.sin300°.​

Answer 1

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Answer 2

Step-by-step explanation:

Sin (360-300).cos (90+30)+ cos (270-210) .cos 360 - 300)

= sin sq 30 + sin sq 60

(1/2)sq + (√3/2) sq

1/4 + 3/4

4/4

1