Question

please give correct answer for this points are 100​

Answer 1

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Answer 2

Answer:

27 cm

Step-by-step explanation:

6 cm is the side of this equilateral triangle.

Length of angle bisector = AD² = bc [1 − {a²/(b + c)²}]

Now, a=b=c

so, AD² = a²[1 − {a²/(2a)²}] = a² - a⁴/4a² = a² - a²/4 = 3a²/4 = 3(6)²/4

= 3 x 36/4 = 3 x 9 = 27 cm

so, AD = √27 = 3√3 cm