In the given figure, DE||BC and DE:BC=3:5 . Calculate the ratio of areas of Delta ADE and the trpezium BCED.
In the figure, chord AB || tangent DE. Tangent DE touches the circle at point C then prove AC = BC.
In the adjacent figure DE is parallel to BC and ratio of areas of DeltaADE and trapezium BDEC is 4 : 5. What is the value of DE : BC?
De Moivre's theorem
In the given figure,ABC is an equilateral triangle which is inscribed inside a circle and whose radius is r .Which of the following is the area of the triangle? (r+DE)^((1)/(2))(r-DE)^((3)/(2))(b)(r-DE)^((1)/(2))(r+DE)^(2)(c)(r-DE)^((1)/(2))(r+DE)^(2)(d)(r-DE)^((1)/(2))(r+DE)^((3)/(2))(d)
In figure, DE and DF are tangents from an external point D to a circle with centre A. If DE = 5 cm and DE_|_DF , then find the radius of the circle.
