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The value of sec(2cot^(-1)2+cos^(-1)3/5)...

The value of `sec(2cot^(-1)2+cos^(-1)3/5)` is equal to

A

`25/24`

B

`-24/7`

C

`25/7`

D

`-25/7`

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • The value of sec ( 2 cot^(-1) 2 + cos^(-1) . 3/5) is equal to

    A
    `25/24`
    B
    ` - 24/7`
    C
    `25/7`
    D
    `- 25/7`

  • "cosec"[2 cot^(-1)(5) + cos^(-1)(4/5)] is equal to

    A
    `56/33`
    B
    `65/56`
    C
    `65/33`
    D
    `75/56`

  • The value of sec11^(@).sec19^(@)-2cot71^(@) is equal to

    A
    `2cot11^(@)`
    B
    `tan19^(@)`
    C
    `2tan11^(@)`
    D
    `1/9tan19^(@)`

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