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10sec^(2)A-10tan^(2)A=...

`10sec^(2)A-10tan^(2)A=`_______

A

`sec^(2)A`

B

10

C

1

D

0

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Choose the correct option.Justify your choice (i) 9sec^(2)A-9tan^(2)A

    A
    1
    B
    9
    C
    8
    D
    0

  • sec (2 tan ^(-1) (3)/(2))=

    A
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    B
    `(5)/(13)`
    C
    `-(13)/(5)`
    D
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  • sec ^(2)(tan ^(-1) 2)+cosec^(2)(cot ^(-1) 3)=

    A
    5
    B
    15
    C
    13
    D
    12

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