Question

If x Tan^210°+4Cos^150°=9 then x=

Answer 1

x tan (270-60) + 4cos (90+60)=9

x tan (3×90-60)+ 4 cos (90+60)=9

xcot(60) + 4[-sin(60)] =9

x/√3 + 4(-√3/2) =9

x/√3 + (-2√3) =9

x/√3 - 2√3 =9

(x - 2×√3×√3)/√3 = 9

x - 6 =9√3

x = 9√3 + 6

may be, this can be your answer..............