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tan20^@+tan25^@+tan20^@.tan25^@=.......

`tan20^@+tan25^@+tan20^@.tan25^@=....`

A

`-sqrt2`

B

1

C

`1//sqrt2`

D

-1

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • tan 20^(@) + tan 25^(@) +tan 20^@ tan25^(@)=

    A
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    B
    `-1/sqrt2`
    C
    1
    D
    `sqrt2`

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    4

  • The value of tan 15^@ tan 25^@ tan 45^@ tan 65^@ tan 75^@ is

    A
    3
    B
    `sqrt3`
    C
    `2`
    D
    1

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