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Find the value of (a) cot 300^(@) (...

Find the value of
(a) ` cot 300^(@)`
(b) `tan 330^(@)`
(c) `cos (-60)^(@)`
(d) `sin (-150)^(@)`
(e) `cos ( -120)^(@)`

A

`-1/sqrt3` , `-1/sqrt3` ,`-1/2` , `-1/2` , `-1/2`

B

`-1/sqrt3` , `-1/sqrt3` ,`-1/2` , `1/2` , `1/2`

C

`-1//sqrt3` , `1//sqrt3` ,`-1/2` , `-1/2` , `-1/2`

D

`-1/sqrt3` , `1/sqrt3` ,`-1/2` , `-1/2` , `-1/sqrt3`

Text Solution

Verified by Experts

The correct Answer is:
A
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Find the value of (i) cos 480^(@) " " (ii) sin 1230^(@) " "(iii) cot (-135^(@)) (iv) "cosec "(-1410^(@))" "(v) cos (-870^(@)) " "(vi) tan 330^(@)

Find the value of (i) cos(-60^(@)) " " (ii) tan(210^(@))" " (iii) sin (300^(@))" " (iv) cos(120^(@))

Knowledge Check

  • Find the value of (sin 135^(@) - cos 120^(@))/(sin 135^(@) + cos 120^(@))

    A
    `3 - 2 sqrt2`
    B
    `4 -2 sqrt2`
    C
    `3 + 2sqrr2`
    D
    `2sqrt2`

  • Find the value of (sin 135^(@) - cos 120^(@))/(sin 135^(@) + cos 120^(@))

    A
    `3 - 2 sqrt(2)`
    B
    `4 - 2 sqrt (2)`
    C
    `3 + 2 sqrt(2)`
    D
    `2 sqrt(2)`

  • Find the value of the following : (a) sin ( - 30^(@)) (b) cos (-60^(@)) (c ) tan (- 45^(@))

    A
    `(a) ` `-1//2,` (b) `1//2` (c ) `-1``
    B
    `(a)` `1//2,` (b) `-1//2` (c ) `-1``
    C
    `(a)` `-1//2,` (b) `1//2` (c ) `1``
    D
    `(a)` `-1//2,` (b) `-1//2` (c ) `-1``

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    Find the value of, 2 tan 45^(@)+cos 30^(@)-sin 60^(@) .

    Find the value of sin60^(@)cos30^(@)+cos60^(@)sin30^(@) .

    Find the values of: (i) tan (-30^(@)) (ii) sin 120^(@) (iii) sin 135^(@) (iv) cos 150^(@) (v) sin 270^(@) (vi) cos 270^(@)

    Find the value of following :- {:((a)sin 150^(@)"", (b)sin 135^(@)), ((c)cos 120^(@)"", (d)tan 225^(@)), ((e)cos 240^(@)"", (f)sin 210^(@)), ((g)sin 315^(@)"", (h)sin 300^(@)):}

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