Home
Class 12
MATHS
sin""(3pi)/(5)+ sin""(4pi)/5+sin""(6pi)/...

`sin""(3pi)/(5)+ sin""(4pi)/5+sin""(6pi)/(5)+sin""(7pi)/(5)=`

A

0

B

`-1`

C

`1`

D

2

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1 B ( COMPOUNDS ANGLES )|106 Videos

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1 C ( MULTIPLE AND SUBMULTIPLE ANGLES )|118 Videos

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 ( SPEICAL TYPE QUESTIONS ) SET -4|20 Videos

  • TRIGONOMETRIC EQUATIONS

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 (SPECIAL TYPE QUESTIONS) SET - 4|4 Videos

Similar Questions

Explore conceptually related problems

Show that sin""(pi)/5.sin""(2pi)/5.sin""(3pi)/5.sin""(4pi)/5=5/16 .

If sin "" (pi)/(18) sin "" (5pi)/(18) sin ""(7pi)/(18) =

Knowledge Check

  • If sin""(pi)/18 sin""(5pi)/18 sin""(7pi)/18 =

    A
    8
    B
    `1/8`
    C
    `1//7`
    D
    6

  • sin ""(pi)/(14).sin""(3pi)/(14).sin""(5pi)/(14).sin""(7pi)/(14).sin""(9pi)/(14).sin""(11pi)/(14).sin""(13pi)/(14)=

    A
    `1//64`
    B
    `3//64`
    C
    `5//64`
    D
    `7//64`

  • sin "" (pi)/(7) sin "" (2pi)/(7) sin "" (4pi )/(7)=

    A
    `(sqrt7)/(8)`
    B
    `(sqrt7)/(4)`
    C
    `(sqrt7)/(2)`
    D
    `sqrt7`

    • Similar Questions

    Explore conceptually related problems

    If sin "" (pi)/(18) sin "" (5pi)/(18) sin "" (7pi)/(18) =

    cos^(2)""(pi)/(5)+ sin^(2)""(4pi)/(5)=

    sin "" (pi)/(14) .sin "" (3pi)/(14).sin"" (5pi)/(14).sin""(7pi)/(14).sin"" (9pi)/(14).sin""(11pi)/(14).sin""(13pi)/(14)=

    sin "" (2pi)/(7) + sin "" (4pi)/(7) + sin "" (8pi)/(7) =

    "sin"pi/14" sin"(3pi)/14" sin"(5pi)/14" sin"(7pi)/5=

    Home
    Profile