Trigonometry English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

9th Standard

    Reg.No. :
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Maths

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

    Part A

    10 x 1 = 10
  1. If tan\(\theta\) cot370 , then the value of \(\theta\) is

    (a)

    370

    (b)

    530

    (c)

    900

    (d)

    10

  2. The value of \(\frac { tan15° }{ cot75° } \) is

    (a)

    cos900

    (b)

    sin300

    (c)

    tan450

    (d)

    cos300

  3. if sin \(\alpha\) = \(\frac { 1 }{ 2 } \) and \(\alpha\) is a cute, then (3 cos\(\alpha\) - 4cos3 \(\alpha\)) is equal to

    (a)

    0

    (b)

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

    (c)

    \(\frac { 1 }{ 6 } \)

    (d)

    -1

  4. The value of 3sin700sec200 + 2sin490sec510 is

    (a)

    2

    (b)

    3

    (c)

    5

    (d)

    6

  5. The value of \(\frac { 1-{ tan }^{ 2 }{ 45 }^{ 0 } }{ 1+{ tan }^{ 2 }{ 45 }^{ 0 } } \)

    (a)

    2

    (b)

    1

    (c)

    0

    (d)

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

  6. If cos A = \(\frac { 3 }{ 5 } \), them the value of tan A is

    (a)

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

    (b)

    \(\frac { 3 }{ 4 } \)

    (c)

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

    (d)

    \(\frac { 4 }{ 3 } \)

  7. The value of cosec(700 + \(\theta\)) - sec(200 - \(\theta\)) + tan(650 + \(\theta\)) - cot(250 - \(\theta\)) is

    (a)

    0

    (b)

    1

    (c)

    2

    (d)

    3

  8. The value of tan1°.tan2°.tan3°...tan89° is

    (a)

    0

    (b)

    1

    (c)

    2

    (d)

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

  9. Given that sin \(\alpha\) = \(\frac { 1 }{ 2 } \) and cos \(\beta\) = \(\frac { 1 }{ 2 } \), then the value of \(\alpha\) + \(\beta\) is

    (a)

    00

    (b)

    900

    (c)

    300

    (d)

    600

  10. The value of \(\frac { sin{ 29 }^{ 0 }31' }{ cos{ 60 }^{ 0 }29' } \) is

    (a)

    0

    (b)

    2

    (c)

    1

    (d)

    -1

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