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If x cos^(2)30^(@).sin60=(tan^(2)45^(@)....

If `x cos^(2)30^(@).sin60=(tan^(2)45^(@).sec60)/("co s ec"60^(2))`
then the value of x

A

`(1)/(sqrt3)`

B

`2(2)/(3)`

C

`(1)/(sqrt2)`

D

`(1)/(2)`

लिखित उत्तर

Verified by Experts

The correct Answer is:
b

`xcos^(2)30^(@).sin60^(@)`
`=(tan^(2)45^(@)sec60^(@))/(co s ec60^(@))`
`x((sqrt(3))/(2))^(2)((sqrt(3))/(2))=((1)^(2)(2))/(((2)/sqrt(3)))`
`x=2(2)/(3)`
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