if `xsin60^(@)" "tan30^(@)-tan^(2)45^(@)=co s ec60^(@)cot30^(@)-sec^(2)45^(@)` then `x=`

Options

A. 2
B. `-2`
C. `-6`
D. `-4`

Answer

a

Explanation

`x sin60^(@)tan30^(@)-tan^(2)45^(@)=co s ec60^(@)cot30^(@)-sec^(2)45^(@)`
`rArrx xxsqrt(3)/(2)xx(1)/sqrt(3)-1=(2)/sqrt(3)xxsqrt(3)-(sqrt(2))`
`rArr(x)/(2)-1=2-2`
`rArr(x)/(2)-1=0`
`rArr(x)/(2)=1rArr2`