Home
Class 11
MATHS
Exact value of cos 20^0+2sin^2\ \ 55^0-s...

Exact value of `cos 20^0+2sin^2\ \ 55^0-sqrt(2)sin65^0\ ` is- a.`1` b. `1/(sqrt(2))` c.`sqrt(2)` d. zero

Answer

Step by step text solution for Exact value of cos 20^0+2sin^2\ \ 55^0-sqrt(2)sin65^0\ is- a.1 b. 1/(sqrt(2)) c.sqrt(2) d. zero by MATHS experts to help you in doubts & scoring excellent marks in Class 11 exams.

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • TRIGONOMETRIC EQUATION

    ALLEN|Exercise All Questions|86 Videos

Similar Questions

Explore conceptually related problems

Q.exact value of cos20^(@)+2sin^(2)(55)^(@)-sqrt(2)sin65^(@)

cos20^(@)+2sin^(2)(55)^(@)-sqrt(2)sin65^(@) is equal

Knowledge Check

  • The value of int_(0)^(sin^(2)) sin^(-1)sqrt(t)dt+int_(0)^(cos^(2)x)cos^(-1)sqrt(t)dt , is

    A
    `pi`
    B
    `(pi)/(2)`
    C
    `(pi)/(4)`
    D
    none of these

    • Similar Questions

    Explore conceptually related problems

    cos20^(@)+2sin^(2)55^(@)-sqrt(2)sin65^(@) is equal to

    The value of (lim)_(x->0)(sqrt(2)-sqrt(1+cos x))/(sin^2x) is 1/(2sqrt(2)) b. 1/(8sqrt(2)) c. 1/(4sqrt(2))\ d. -1/(4sqrt(2))

    2sin^(2)x+sqrt(3)cos x+1=0

    The value of (cos^(3)20o-cos^(3)70o)/(sin^(3)70o-sin^(3)20o) is (1)/(2)(b)(1)/(sqrt(2))(c)1(d)2

    If cos20^(@)+2sin^(2)55^(@)=1+sqrt(2)sinK^(@), K in (0, 90)," then "K=

    Show that: s in50^(0)cos95^(0)=(1-sqrt(2)sin35^(@))/(2sqrt(2))

    The value of sin(1/4sin^(-1)(sqrt(63))/8) is 1/(sqrt(2)) (b) 1/(sqrt(3)) (c) 1/(2sqrt(2)) (d) 1/(3sqrt(3))

    Home
    Profile