Trigonometry - One Mark Questions

11th Standard

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Business Maths

Time : 00:30:00 Hrs
Total Marks : 10
    10 x 1 = 10
  1. The degree measure of \(\frac{\pi}{8}\) is

    (a)

    20o60'

    (b)

    22o30'

    (c)

    20o60'

    (d)

    20o30'

  2. The radian measure of 37o30' is

    (a)

    \(\frac{5\pi}{24}\)

    (b)

    \(\frac{3\pi}{24}\)

    (c)

    \(\frac{7\pi}{24}\)

    (d)

    \(\frac{9\pi}{24}\)

  3. If \(\tan\theta=\frac{1}{\sqrt5}\) and \(\theta\) lies in the first quadrant, then \(\cos\theta\) is

    (a)

    \(\frac{1}{\sqrt6}\)

    (b)

    \(\frac{-1}{\sqrt6}\)

    (c)

    \(\frac{\sqrt5}{\sqrt6}\)

    (d)

    \(\frac{-\sqrt5}{\sqrt6}\)

  4. The value of \(\sin15^o\) is

    (a)

    \(\frac{\sqrt{3}+1}{2\sqrt{2}}\)

    (b)

    \(\frac{\sqrt{3}-1}{2\sqrt{2}}\)

    (c)

    \(\frac{\sqrt3}{\sqrt2}\)

    (d)

    \(\frac{\sqrt3}{2\sqrt2}\)

  5. The value of \(\sin(-420^o)\) is

    (a)

    \(\frac{\sqrt3}{2}\)

    (b)

    \(-\frac{\sqrt3}{2}\)

    (c)

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

    (d)

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

  6. The value of \(\cos(-480^o)\) is

    (a)

    \(\sqrt3\)

    (b)

    \(-\frac{\sqrt3}{2}\)

    (c)

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

    (d)

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

  7. The value of \(\sin 28^o\cos 17^o+\cos 28^o\sin 17^o\) is

    (a)

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

    (b)

    1

    (c)

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

    (d)

    0

  8. The value of sin 15o cos 15o is

    (a)

    1

    (b)

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

    (c)

    \(\frac{\sqrt3}{2}\)

    (d)

    \(\frac{1}{4}\)

  9. The value of sec A sin(270o+A) is

    (a)

    -1

    (b)

    cos2 A

    (c)

    sec2 A

    (d)

    1

  10. If sin A+ cos A=1, then sin 2A is equal to

    (a)

    1

    (b)

    2

    (c)

    0

    (d)

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

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