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Arithmetic Aptitude :: Trigonometry

Trigonometry - Section-1
  1.  Number of dimensions a point can have is

    2. A.

    zero
    B.

    one
    C.

    infinite
    D.

    negative

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  2.  Flat surface like blackboard is classified as

    3. A.

    plane
    B.

    vertex plane
    C.

    triangular plane
    D.

    trigonometrical plane

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  3.  By expressing cos 82° in terms of trigonometrical ratios, answer will be

    4. A.

    − cos 29° = -0.8746
    B.

    − cos 38° = -0.7880
    C.

    − cos 89° = -0.2319
    D.

    − cos 98° = -0.1392

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  4.  For any acute angle, cosine A is equal to

    5. A.

    cos (180° - A)
    B.

    -cos (180° - A)
    C.

    cos (180° + A)
    D.

    -cos (180° + A)

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  5.  If cos 55° and sin 55° = 0.8 each then answer of 3 cos 125° + 5 sin 125° is

    6. A.

    0.6
    B.

    1.6
    C.

    2.3
    D.

    2.5

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  6.  Considering Cosine rule, b² + c² - a²⁄2bc is equal to

    7. A.

    cos A
    B.

    cos B
    C.

    cos C
    D.

    cos D

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  7.  If sine is 0.2586 then value of acute angle is

    8. A.

    14.99°
    B.

    16°
    C.

    17.98°
    D.

    18°

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  8.  Dimensions of solid includes

    9. A.

    length
    B.

    breadth
    C.

    height
    D.

    all of the above

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  9.  Considering 0° < x < 180°, angle of cos x = -0.8726 is

    10. A.

    150.76°
    B.

    160.72°
    C.

    165.82°
    D.

    167.35°

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  10.  1 + tan²2θ =

    11. A.

    sec²θ
    B.

    csc²θ
    C.

    csc²2θ
    D.

    sec²2θ

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