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11th Standard English Medium Maths Subject Trigonometry Book Back 2 Mark Questions with Solution Part - I

11th Standard

    Reg.No. :
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Maths

Time : 01:00:00 Hrs
Total Marks : 20

    2 Marks

    10 x 2 = 20
  1. Identify the quadrant in which an angle of each given measure lies; 250

  2. Find the value of sin 105o

  3. Prove that \(\cos { \left( \pi +\theta \right) } =-\cos { \theta } \)

  4. Find the principal value of \(sin^{ -1 }\left( \frac { 1 }{ \sqrt { 2 } } \right) \).

  5. Find the principal value of cosec-1(-1)

  6. Find the principal value of sec-1\(\left( -\sqrt { 2 } \right) \)

  7. If tan2 \(\theta\) = 1 - k2, Show that sec \(\theta\) + tan3 \(\theta\) cosec \(\theta\) = (2 -k2)3/2. Also, find the value of k for which this result holds

  8. Express each of the following angles in radian measure
    300

  9. Express each of the following angles in radian measure
    1350

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