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" If "m*tan(theta-30^(@))=n*tan(theta+12...

" If "m*tan(theta-30^(@))=n*tan(theta+120^(@))," then "cos2 theta=

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If m* tan ( theta - 30^(@))= n* tan( theta + 120^(@)), "then " cos 2 theta =

m tan(theta-30^(@))=n tan(theta+120^(@)) show that cos2 theta=(m+n)/(2(m-n))

If m tan (theta -30^(@)) = n tan (theta +120^(@)), then the value of cos 2 theta is -

If m tan (theta - 30^(@))= n tan (theta + 120^(@)), show that cos 2 theta = (m +n)/(2 (m -n)).

if m*tan(theta-30)=n*tan(theta+120), show that cos2 theta=(m+n)/(2(m-n))

If m tan (theta - 30^(@)) = n tan (theta + 120^(@)), "show that", 2 cos 2theta = (m+n)/(m-n).

If m tan(theta-30^(@))=n tan(theta+120^(@)) then (m+n)/(m-n) is equal to