Question

ΔABC is equilateral triangle having each side 4 cm. If ED is perpendicular to AB where E lies on AC and AD = 1 cm, then area of
(1) ΔABC = 4 root3 sq. cm
(2) Quadrilateral BCED = 7 root3/2 sq. cm
(3) ΔADE = root3/2sq. cm
(4) ar( triangle ADE) / ar(triangle ABC) = 8/1
Please answer quickly with detailed solution.

Answer 1

Answer:

4 th option is wrong all other are correct..

Step-by-step explanation:

use basic trigonometric formulas