Home/ Questions/Q 420479
Next
In Process
Naseer Bhavsar
Asked: 2022-11-07T22:51:52+05:30 In:

Choose the correct answer in each of the following questions:
`(sec 30^(@))/(“cosec”60^(@))=?`
A. `(2)/(sqrt(3))`
B. `(sqrt(3))/(2)`
C. `sqrt(3)`
D. 1

Choose the correct answer in each of the following questions:
`(sec 30^(@))/(“cosec”60^(@))=?`
A. `(2)/(sqrt(3))`
B. `(sqrt(3))/(2)`
C. `sqrt(3)`
D. 1
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – D

    • 0
Ragini Agrawal
Asked: 2022-11-06T20:33:00+05:30 In:

Choose the correct answer in each of the following questions:
`sin^(2)30^(@)+4cot^(2)45^(@)-sec^(2)60^(@)=?`

Choose the correct answer in each of the following questions:
`sin^(2)30^(@)+4cot^(2)45^(@)-sec^(2)60^(@)=?`
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – B
    `sin^(2)30^(@)+4cot^(2)45^(@)-sec^(2)60^(@)=((1)/(2))^(2)+4xx(1)^(2)-2^(2)=(1)/(4)+4-4=(1)/(4).`

    • 0
Juhi Ratti
Asked: 2022-11-04T19:07:00+05:30 In:

Choose the correct answer in each of the following questions:
If `sqrt(3) tan 2theta-3=0 ” then ” theta=?`
A. `15^(@)`
B. `30^(@)`
C. `45^(@)`
D. `60^(@)`

Choose the correct answer in each of the following questions:
If `sqrt(3) tan 2theta-3=0 ” then ” theta=?`
A. `15^(@)`
B. `30^(@)`
C. `45^(@)`
D. `60^(@)`
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – B
    `sqrt(3)tan 2theta=3rArr tan 2theta=(3)/(sqrt(3))=sqrt(3)=tan60^(@)rArr 2theta=60^(@)rArrtheta=30^(@)`.

    • 0
Narayan Chandra Sachdeva
Asked: 2022-10-31T17:57:53+05:30 In:

Choose the correct answer in each of the following questions:
`sin47^(@)cos43^(@)+cos47^(@)sin43^(@)=?`
A. `sin4^(@)`
B. `cos4^(@)`
C. 1
D. 0

Choose the correct answer in each of the following questions:
`sin47^(@)cos43^(@)+cos47^(@)sin43^(@)=?`
A. `sin4^(@)`
B. `cos4^(@)`
C. 1
D. 0
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – C
    Given expression `=sin47^(@)cos(90^(@)-47^(@))+cos47^(@)sin(90^(@)-47^(@))`
    `=(sin^(2)47^(@)+cos^(2)47^(@))=1.`

    • 0
Kim Kunda
Asked: 2022-10-30T11:34:50+05:30 In:

Choose the correct answer in each of the following questions:
If `2cos 3 theta=1 ” then ” theta=?`
A. `10^(@)`
B. `15^(@)`
C. `20^(@)`
D. `30^(@)`

Choose the correct answer in each of the following questions:
If `2cos 3 theta=1 ” then ” theta=?`
A. `10^(@)`
B. `15^(@)`
C. `20^(@)`
D. `30^(@)`
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – C
    `2cos3theta=1rArr cos3theta=(1)/(2)=cos60^(@)rArr3theta=60^(@)rArr theta=20^(@).`

    • 0