Question 7

MATHEMATICS π π 2π − 2π

• (A)
• (B)
• (C)
• (D). 3 2 3 3 Solution (A) is the correct answer.  π   −10π  sin –1 sin  − 600 ×  = sin sin  –1   180   3  –1   2π   –1  2π  = sin  − sin  4π −   = sin  sin    3   3  –1   π  –1  π π = sin  sin  π −   = sin  sin  = .   3   3 3