In the given figure △ABC is equilateral. The ratio IE : IB = ____.
2 : 1
1 : 1
1 : 2
1 : 3
△ABC is equilateral .........(Given)
In △IBE , ∠IBC=30∘ .........(Bi bisects ∠ABC)
sin30∘ = rR ...........(sin30∘ = 12)
⇒ r : R = IE : IB = 1 : 2
In the given figure △ABC is equilateral. If IB = 6 cm , then IE = ____.
In the given figure △ABC is equilateral. If IE = 4 cm , IB = ____.
In the given equilateral triangle ABC, find the value of sin 30∘ and cos 30∘, without using tables.
AD is the perpendicular bisector of BC.
In an equilateral triangle ABC, find the value of sin 30∘ and cos 30∘
In the given figure, O is the circumcentre of an equilateral triangle ABC. Here, area of ΔBOC=13 area of ΔABC.