`(( sin 35^(@))/( cos 55^(@)))^(2)+((cos 55^(@))/( sin 35^(@)))^(2)-2 cos 60^(@)` व्यंजक के मान ज्ञात करो ।

Explanation

`{( sin 35^(@))/( cos 55^(@))}^(2) +{( cos 55^(@))/( sin 35^(@))}^(2)- 2 cos 60^(@)` ltbr ` ={( sin (90^(@)-55^(@)))/( cos 55^(@))}^(2) +{(cos (90^(@) -35^(@)))/( sin 35^(@))}^(2)- 2 cos 60^(@)`
`(( cos 55^(@))/( cos 55^(@)))^(2) + ((sin 35^(@))/( sin 35^(@)))^(@)- 2 cos 60^(@) " " [ :' cos (90^(@) - theta )=sin theta " और " sin (90^(@) - theta )= cos theta ]`
` =1^(2) +1^(2) -2xx (1)/(2) =1 " " { :' cos 60^(@) =(1)/(2)]`