Home
Class 11
MATHS
The value of cos^2 10^0-cos10^0cos50^0+c...

The value of `cos^2 10^0-cos10^0cos50^0+cos^2 50^0` is equal to `4/3` (b) `1/3` (c) `3/4` (d) `3`

Text Solution

AI Generated Solution

To solve the problem \( \cos^2 10^\circ - \cos 10^\circ \cos 50^\circ + \cos^2 50^\circ \), we will follow these steps: ### Step 1: Rewrite the expression We start with the expression: \[ \cos^2 10^\circ - \cos 10^\circ \cos 50^\circ + \cos^2 50^\circ \] ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • STRAIGHT LINES

    CENGAGE|Exercise Solved Examples And Exercises|482 Videos

Similar Questions

Explore conceptually related problems

cos10^(0)cos30^(0)cos50^(@)cos70^(0)

Write the value of cos1^(0)+cos2^(0)+cos3^(0)++cos180^(@)

Knowledge Check

  • The value of cos^(2)10^(@)-cos10^(@) cos 50^(@) + cos^(2) 50^(@) is

    A
    `(3)/(2) (1+cos20^(@))`
    B
    `(3)/(4)+cos20^(@)`
    C
    `3/2`
    D
    `3/4`

  • The value of a=cos^(2)(10^(@))-cos(10^(@))cos(50^(@))+cos^(2)(50^(@)) is

    A
    `(3)/(4)+cos(20^(@))`
    B
    `(3)/(4)`
    C
    `(3)/(2) (1+cos(20^(@)))`
    D
    `(3)/(2)`

  • cos^(2)10^(@)+cos^(2)50^(@)-cos10^(@)cos50^(@) is equal to

    A
    `(3)/(2)`
    B
    `(3)/(4)`
    C
    `(3)/(2)(cos20^(@)+1)`
    D
    `(3)/(4)(cos20^(@)+1)`

    • Similar Questions

    Explore conceptually related problems

    If cos25^(0)+sin25^(0)=K, then cos50^(@) is equal to

    The value of cos52^(0)+cos68^(0)+cos172^(0) is 0 b.1 c.2 d.3/2

    The value of cos1^(0)cos2^(0)cos3^(0)cos179^(@) is 1/sqrt(2) b.0 c.1 d.-1

    The values of cos^(2)73^(0)+cos^(2)47^(0)-sin^(2)43^(0)+sin^(2)107^(0) is equal to: ( b) (1)/(2)(c)(sqrt(3))/(2) (d) sin^(2)73^(@)+cos^(4)73^(@)

    (cos^(2)1^(0)-cos^(2)2^(0))/(2sin3^(0)*sin1^(0)) is equal to

    Home
    Profile