Math Class 11 Chapter 10 - Trigonometric Identities of Sum and Differ

Fill in the Blank

  • 1. P is a point on the terminal side of an angle one unit away from origin; the co-ordinates of P are __________.
  • 2. If Sin x = 1/3 then Sin 3 x = ______________.
  • 3. If tan = ½ then Cos2 = ______________.
  • 4. If Sin x = ½, Cos y = 1/3 the value of Cos (x + y) = __________.
  • 5. If cos x = 3/5, then = __________.
  • 6. tan ( /2 + ) = tan (3 /2 + ) = _______________.
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