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All trigonometrical function are...

All trigonometrical function are

A

non periodic

B

need not be period function

C

even function

D

odd function

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Knowledge Check

  • (A): The method of dimensions cannot be used to obtain the dependence of work done by a force when the force is incli- ned to the direction of displacement. (R): All trigonometric functions are dimensionless.

    A
    Both (A) and (R) are true and (R) is the correct explanation of (A)
    B
    Both (A) and (R) are true and (R) is not the correct explanation of (A)
    C
    (A) is true but (R) is false
    D
    Both (A) and (R) are false

  • (A) : The method of dimensions cannot be used to obtain the dependence of work done by a force when the force is inclined to the direction of displacement. (R) : All trigonometric functions are dimensionless.

    A
    Both (A) and (R) are true and (R) is the correct explanation of (A)
    B
    Both (A) and (R) are true and (R) is not the correct explanation of (A)
    C
    (A) is true but (R) is false
    D
    Both (A) and (R) are false

  • If alpha=3sin^(-1)(6/11) and beta=3cos^(-1)(4/9) , where the inverse trigonometric functions take only the principal values, then the correct option(s) is(are)

    A
    `cosbeta gt 0`
    B
    `sinbeta lt 0`
    C
    `cos(alpha+beta) gt 0`
    D
    `cosalpha lt 0`

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