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

11th Standard

    Reg.No. :
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Maths

Time : 01:00:00 Hrs
Total Marks : 10

    2 Marks

    5 x 2 = 10
  1. Find the radian measures 400 20'

  2. Find the values of cos x and tan x if \(\sin x=-\frac{3}{5}\) and \(\pi < x < \frac{3\pi}{2}\)

  3. Prove that \(\frac { 1+sinx-cosx }{ 1+sinx+cosx } =tan\frac { x }{ 2 } \) .

  4. In a ΔABC if a = 3, b = 5 and c = 7, find cos A and cos B.

  5. Prove that \({ tan }^{ -1 }\left( \frac { 1 }{ 7 } \right) +{ tan }^{ -1 }\left( \frac { 1 }{ 13 } \right) ={ tan }^{ -1 }\frac { 2 }{ 9 } \)

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