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11th Standard English Medium Business Maths Subject Trigonometry Book Back 1 Mark Questions with Solution Part - IO

11th Standard

    Reg.No. :
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Business Maths

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5
  1. The value of \(\frac{3 \tan 10^{\circ}-\tan ^3 10^{\circ}}{1-3 \tan ^2 10^{\circ}}\) is _______,

    (a)

    \(\frac{1}{\sqrt3}\)

    (b)

    \(\frac{1}{2}\)

    (c)

    \(\frac{\sqrt3}2\)

    (d)

    \(\frac{1}{\sqrt2}\)

  2. \(\sec^{-1}\frac{2}{3}+cosec^{-1}\frac{2}{3}=\) ______.

    (a)

    \(\frac{-\pi}{2}\)

    (b)

    \(\frac{\pi}{2}\)

    (c)

    \(\pi\)

    (d)

    \(-\pi\)

  3. If \(\tan A=\frac{1}{2}\) and \(\tan B=\frac{1}{3}\) then tan(2A + B) is equal to ______.

    (a)

    1

    (b)

    2

    (c)

    3

    (d)

    4

  4. \(\sin\left(\cos^{-1}\frac{3}{5}\right)\) is _____.

    (a)

    \(\frac{3}{5}\)

    (b)

    \(\frac{5}{3}\)

    (c)

    \(\frac{4}{5}\)

    (d)

    \(\frac{5}{4}\)

  5. If p sec 50o = tan 50o then p is _______.

    (a)

    cos 50o

    (b)

    sin 50o

    (c)

    tan 50o

    (d)

    sec 50o

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