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AP EAMCET2006MathematicsTrigonometric Ratios & Identities

120^ 150^ - 240^ 330^ is equal to :

Options

  1. A1
  2. B-1
  3. C2 3
  4. D- ( 3 +1 4 )

Correct answer

B. -1

Step-by-step solution

120^ 150^ - 240^ 330^ =- 30^ 60^ - 60^ 30^ =- ( 60^ 30^ + 60^ 30^ )=- (60^ +30^ )=- 90^ =-1

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