In what Quadrant is tan 0 < 0 and sin 0 < 0 Look at the picture please answer both for brainist

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

If the value of cos330°is√3/2 then find cos 165°.

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